Summary: The Straw Hats land on an uninhabited island; Sanji immediately notices that it is covered with fruit-bearing trees. The crew decides to divide the work by drawing straws. Luffy, Zoro, and Usopp are sent to gather the fruit while Nami and Sanji survey the island. Chopper is left to guard the ship. He enjoys himself but suddenly realizes that Robin is nearby and flees into the cabin. He works on producing Rumble Balls and talks to himself about his mentor, Dr. Kureha, but notices that Robin is listening to him and breaks a barrel of water in surprise. Robin accompanies Chopper as he goes to replace the spilled liquid and he tells Robin about Dr. Kureha and how she became his first patient.

Summary: While fishing with Chopper and Usopp, Luffy fishes an ammonite-shaped vehicle out of the sea. The pirates debate if it is edible, but to their surprise, its side opens and a traveling salesman emerges. He offers them obscure items and tries to sell a pile of paper to Nami. However, before he can settle the deal, the salesman realizes that he is on a pirate ship and flees in panic, abandoning his merchandise. With the paper, Nami can finally begin drawing the map of the world that she has dreamed about making since her childhood. However, because the rest of the crew is causing mischief, she has trouble completing her work and has to restart twice before finishing her map of Reverse Mountain.

Summary: In a thick bank of fog, the Straw Hats run into a fleet of navy ships. Surprised by the sight of the skull and crossbones on the pirate ship's sails, the young trainee cook Tajiyo falls off of his navy vessel. Robin catches him before he hits the water and the boy regains consciousness in the Straw Hats' cabin. Scared at first, he loosens up when presented by Sanji with a soup of surprising quality. The small cook reveals his problem - he spilled the day's production of curry and has been charged with replacing it. To compound the issue, the fleet's captains plan to dine aboard his ship. Luffy and Sanji take Tajiyo back to his ship, where Sanji provides him with subtle cooking advice. Tajiyo's new curry turns out perfectly and the Straw Hats escape before the fog lifts in the mid-day sun.

Summary: Because it is raining, Luffy reads out of boredom. Fortunately for him, the Straw Hats' ship reaches the next island. Walking through its port town, they learn that the island known for its yearly fireworks show, which was to occur that day. The fireworks factory, run by an old man named Odama and his granddaughter Kodama, is on a hill outside the town. Usopp goes there, hoping for an opportunity to buy gunpowder. At the factory, he helps Odama and Kodama prepare for the show. Usopp learns that Kodama plans to secretly fire the second of two eight-shaku-tall firework balls to fulfill her parents' dream. Her parents died the previous year after the first misfired, and Usopp convinces Kodama that it is too dangerous for her to fire it. Usopp uses a tall, ancient building to safely launch the large firework ball.

Summary: Before he meets Luffy, Zoro traveled the world in search of "Hawk-Eye" Mihawk. In a flashback, Zoro captures the target of the bounty hunters Johnny and Yosaku in a bar. According to bounty hunter rules, they demand that he relinquish the victim's body to them. Zoro, who does not consider himself a bounty hunter, complies, explaining that he only brings in a bounty from time to time so that he can survive until he can become the greatest swordsman in the world. Later that day, a group of bandits, led by a man with a much higher bounty, plunders the village. Johnny and Yosaku, inspired by Zoro's conviction, decide to take on the villain, but are quickly defeated. As the bandits prepare to kill the pair, Zoro returns and saves Johnny and Yosaku. After he defeats the bandits and their leader, Johnny and Yosaku become his followers.

Summary: A few navy ships chase the Straw Hats. To escape them, the Straw Hats sail through an area of wild currents, which surround an island that is only inhabited by an old man named Zenii and his goats. Zenii realizes that the Straw Hats are pirates and sends his goats to attack them. During the fight Zenii's heart stops from fear. The Straw Hats take him to his home, nurse him back to health, and complete his chores, such as cleaning his house, preparing meals, and chopping wood. Zoro searches for food and discovers a small nearly completed pirate ship atop the island's mountain. At the day's end, as the crew is about to leave, Chopper reveals that the old man will die within three days. Driven by guilt, the Straw Hats decide to stay with him until then.

Summary: The Straw Hats continue to do Zenii's daily work and finish building his pirate ship, which he intends to use as a coffin. Zoro eventually realizes that the three days until Zenii's death, which Chopper had diagnosed, have long passed, but by the time he convinces the others to leave, Nami has already lost the Straw Hats' ship in a game of chess. Robin wins it back and they all have a party. As Zenii becomes drunk, he recollects his past as a moneylender who lent money to pirates. He describes how he was shipwrecked twenty years earlier, and that he, in hopes of one day becoming a pirate, started building a ship. As the years passed, he became too old for a pirate's life. Luffy disagrees, saying that pirates can be of any age. The next day, a group of marines lures the Straw Hats into a trap. To save them, Zenii and his goats ride his ship down the mountainside.

Summary: The commotion caused by Zenii's arrival allows Nami, Sanji, Usopp, and Chopper to board their ship safely. Zenii and his goats get on the navy ship and Zenii uses of his martial arts skills, with a counting frame to fight. Luffy attempts to slingshot himself over to help him, but lands in the water instead. Zoro immediately jumps in after him to rescue the non-swimmer, only to be run over by the Straw Hats' own ship. The marines are eventually defeated, but a fleet of nine more ships is still waiting in the fog surrounding the island. Zenii tells the Straw Hats that, on his arrival on the island, the goats ate all of his money and that they became his treasure instead. The Straw Hats give Zenii enough medicine to survive and leave the island, escaping from the navy.

Summary: After escaping from another fleet of navy ships, the Straw Hats drop anchor outside a town with a huge tower. After they set foot on land, an official demands that they pay a harbor tax. The Straw Hats meet a scientist named Henzo, who asks them if they have seen what he calls the "Rainbow Mist." The other citizens of the town dislike Henzo because they have to pay high taxes to fund for his research. While shopping with Nami and Chopper, Sanji has a violent encounter with a tax collector, who is wearing an electric battle suit. A large, unmanned galley appears in the harbor, in the same condition that Henzo saw it fifty years ago. Henzo, Luffy, Robin, and Usopp aboard it. Further out at sea, a rainbow-colored mist appears and the group uses the Straw Hats' ship to enter it.

Summary: Inside the mist, Luffy and his group discover a large ship graveyard. Luffy salvages a chest filled with gold and jewels from one of the shipwrecks, but a distant voice tells him to return the treasure and leave the mist. Usopp believes the voices to be ghosts, but they actually originate from a group of children who call themselves the Pumpkin Pirates. In his youth, Henzo was a member of this group, and they are the reason for his research. He spent his life in search of a means to rescue them from the Rainbow Mist. Only a short time earlier from their point of view, but fifty years earlier from Henzo's perspective, a group of pirates, led by a Captain Whetton, attacked the children's town. When Whetton came after the children, they tried to escape by stealing the pirates' ship. During the fight, Whetton smashed the ship's helm, and Henzo jumped overboard, taking Whetton with him, while the other children sailed into the mist.

Summary: After entering the Rainbow Mist, the children followed the orders of Ian, the only pirate left on the ship. He mistreated them and they eventually locked him up in the brig of the wreck of a navy ship. Luffy and his group try to escape the mist, but they soon realize that they need help. The Straw Hats persuade one of the children to lead them to the Pumpkin Pirates' hiding place so they can ask them for a way out. Usopp prepares a steaming meal, which causes most of the children to like the Straw Hats; however, their leader, Lapanui, remains suspicious and unwilling to help. Henzo's snail-o-phone rings and the son of Whetton wants Henzo to investigate the mist, not knowing that the professor is already inside the mist. When Lapanui hears Whetton's name, he loses what little he trust has for Henzo.

Summary: Lapanui accuses Henzo of being Whetton's lapdog and says that in the past, Henzo would have never allowed that to happen. Usopp tells Lapanui that Henzo had endured the same insults from the townspeople yet still tried to rescue the children. Then, for no apparent reason, Luffy slingshots himself and Lapanui to another part of the mist. At the harbor, Nami ties a long lifeline, prepared by Henzo, to a boat and enters the Rainbow Mist. Once inside, Ian, who convinced one of the children to release him, steals the boat and escapes. He reaches Whetton and describes to him the mist's treasures. Whetton orders his men to invade the mist. The town's large tower falls into the water, creating a bridge from the island into the mist, and Whetton and his men cross it to attack.

Summary: Luffy and Lapanui are outside the mist and use the newly created bridge to re-enter it. There, Luffy fights Whetton and, as it becomes clear that he cannot defeat Luffy face-to-face, Whetton detonates the tower, trapping everyone else inside and Whetton's abandoned men join forces with Luffy's group. An exit appears in the distance and they row toward it, but it closes too fast for them to reach it. Hoping to generate enough wind to blow the Straw Hats' ship clear of the mist, Lapanui stays behind to destroy the navy ship's armory. The other children follow him, promising to meet Henzo again. The explosion they cause successfully blows the Straw Hats' ship outside the mist. There, a group of navy ships, led by an aged Lapanui, arrives and confiscates the Rainbow Mist's treasures from Whetton and takes him and his men into custody.

Summary: After the Going Merry narrowly escapes being hit by a "sea train", the crew meets an old woman, Kokoro, and her granddaughter, Chimney. Kokoro gives Luffy a map to Water Seven. Luffy, Nami, and Usopp buy boats driven by sea monsters called "yagara".

Summary: Luffy, Nami, and Usopp get strange greetings from the residents and they get to experience the roller coaster-like channels of Water Seven. Luffy find out that some pirates had been beaten at the hands of some powerful craftsmen; the Galley La Company. Chopper loses Robin and some strange new people threaten Zoro back on the ship.

Summary: The people who attacked Zoro reveal themselves to be the feared "Franky Family", though they're no match for Zoro. Luffy have their gold exchanged for cash. After, they meet a man who resembles Usopp, Galley La's carpenter employment foreman, Kaku. Usopp's cut of the money is stolen by the Franky Family.

Summary: Paulie makes his debut when he retrieves Usopp's stolen money as he runs from debt collectors. Kalifa shows Luffy, Nami, and Usopp around Dock No. 1 and tells them how Iceburg founded the Galley La Company. Kaku returns from the Going Merry and tells them that their keel is irreparably damaged.

Summary: Luffy refuses to believe that Galley La cannot repair the Going Merry. The two soon realize that not only is Usopp missing now, but the two brief cases that were returned to them are empty. Nami decides to head to Franky House and finds Usopp on the way in a pitiful state. As she heads back to the ship for help, Usopp goes to the Franky House himself.

Summary: Luffy, Sanji, Zoro, and Chopper follow Usopp's bloody trail to the Franky House, where they find him passed out in front. The four of them challenge the Franky Family only to find out that their real target, Franky himself, is gone and has taken the money with him.

Summary: Once they're back on the ship, Luffy has to finally tell Usopp that the Going Merry can no longer be repaired and that they've chosen to get a new ship without him. Usopp believes that Luffy has abandoned the dignity of their ship and says he's leaving the crew. That night, he challenges Luffy to a duel.

Summary: Usopp fights Luffy in order to decide who keeps the Going Merry; he fights harder than he's ever fought before. Luffy actually seems to pose no threat but all the while, he's remembering what great friends they used to be, sailing together on the same ship. Even after taking a harsh beating, Luffy defeats Usopp. They leave Usopp and the ship behind.

Summary: The Strawhats get themselves a hotel room. Nami finds the crew on the roof with urgent news: Iceburg has been shot. As the Galley La Company frantically search for answers, Nami and Luffy decide to check on his condition – only to be met by closed gates. Franky appears then to exact his revenge – with style.

Summary: In the streets outside of the hospital, Luffy fights Franky. Inside, Iceburg recalls seeing Nico Robin and another tall man before he was shot. The Galley La company run outside and stop Franky and Luffy and tell them that they suspect the Strawhat Pirates of the crime.

Summary: The Galley La Company continues to fight Luffy and Franky is enraged that they've stolen his opponent. An incredibly high tide called the "Aqua Laguna" is coming and Chopper and Sanji rush to warn Usopp. Luffy raises some chaos in order to meet with Iceburg and he demands to know what's happening. Iceburg says he wants to see Robin one more time.

Summary: In a bar, Franky talks with Kokoro about her theory on who shot Iceburg. The rumors she speaks of seem to have some truth as we see Robin meeting with someone from an organization called CP9. While the crew hide from angry residents, Sanji and Chopper discover Robin and she tells them what they've feared: she's responsible and she wants to part ways.

Summary: Chopper reunites with the others without Sanji and they discuss what's happened. Luffy decides that in order to know the full truth, they must catch Robin. Usopp attempts to repair the ship enough to withstand the Aqua Laguna and the Strawhats make their way to the Galley La Company.

Summary: The Strawhats (still missing Sanji) rush to Galley La where Robin and CP9 begin a raid. In Iceburg's room, Robin and the mysterious man Iceburg saw before, tell him that they've purposely placed the blame on the pirates. Their true aim is the blueprints he would've passed down to Paulie. Luffy separates from his group.

Summary: Robin speaks with Iceburg inside his room still. We already know that Robin can read the poneglyphs - and it seems Iceburg is the one with the blueprints to the ultimate weapon, Pluton. The true enemies are revealed to be Iceburg's own allies. Elsewhere, Luffy is tied up with Paulie after Paulie tells members of CP9 that his blueprints are fake.

Summary: Lucci tells Iceburg their hypothesis and has Kaku check his pulse to tell if the things he tells him are true. They suspect that Iceburg's friend from the past, Cutty Flam, is really Franky and it's revealed to be true. Therefore, Franky has the real blueprints. The Strawhat Pirates and Paulie break into the room where they find Iceburg and CP9.

Summary: Luffy and the others request that Robin comes back to the crew. She refuses and tells them that she cannot accomplish her "wish" if she were to stay with them. Robin turns to leave and CP9 try to hold the pirates back. Robin successfully escapes and Lucci shows those remaining his "transformation".

Summary: Lucci's transformation is a result of a Devil's Fruit; a Zoan Type leopard. He quickly disposes of the crew and CP9 tie up Paulie and Iceburg, leaving them alone as the building slowly burns down around them. In Franky's underground hideout, Usopp tells him his story and Franky is finally touched. In return, Franky tells him a little about Tom's contributions to Water Seven.

Summary: Usopp believes that the person who repaired the Going Merry in Skypeia was really the Going Merry itself. Franky says that the ship was inhabited by a spirit who enters ships who are dearly cared for. The spirit repaired their ship just enough for them to reach the next island. The doorbell rings from the sea side and the Galley La foremen enter.

Summary: The foremen discover Franky's hidden room and he fears they'll trample his memories. A long flashback ensues, covering Franky's past in Tom's Workers and how he and Iceburg helped create the Sea Train.

Summary: Spandam, a CP5 representative, was determined to get Tom proven guilty in his trial so he could get the blueprints. As Franky walked into the town, people from the government began to attack with the battleships he had personally constructed. Tom and Iceburg run to their shipyard where they're attacked by two ships which also destroy the others. Iceburg tells Franky that he has to take responsibility or he'll never forgive him.

Summary: Franky said that if a ship of his were to be used as a weapon, then it's no longer one of his ships. That enraged Tom and he punched Franky for the first time, telling him he had to take pride in the ships he created. He then told the judge that he would accept the punishment for both his previous crime and the recent attack. Franky tried to stop the train to Enies Lobby with his bare hands.

Summary: Chopper escapes the burning building with Paulie and Iceburg on his back and collapses outside. Iceburg tells Nami that CP9 threatened to destroy the Straw Hats if Robin didn't cooperate with them. Nami rushes to tell Chopper so they can go looking for the rest of the crew. Elsewhere, the foremen let go of the Going Merry so she would be destroyed at sea.

Summary: Paulie helps clear the name of the Strawhats but doesn't tell the mob everything he knows. He gets the mob to follow Chopper so they can search for the rest of the crew. Nami goes her own way so she can rush to the Sea Train. As Nami nears the station, Sanji, ahead of her, approaches the train

Summary: Nami and the conductors are rescued by Paulie when the Aqua Laguna floods the main station. A man hands Nami a letter he found from Sanji. It informs her that Usopp, Franky, and he are on board the train that had just departed. On board, he storms the cars. High up in the city, Nami speaks with Kokoro and spots Luffy, stuck in between two buildings, in the back streets where the Aqua Laguna will hit first.

Summary: Nami finally reaches Luffy and tells him that he needs to hurry before Robin reaches Enies Lobby. Chopper finds Zoro and hands him the Sandai Kitetsu so he can escape the chimney. Luffy pushes apart the buildings he was stuck between and Paulie grabs them all so they can escape the Aqua Laguna's massive wave.

Summary: Sanji fights his way through another train car and finds Usopp and Franky. Seeing how determined Luffy is to save Robin, Kokoro and Iceburg lends the Strawhat crew the use of another sea train, Rocket Man. The Franky Family shows up, pleading with Luffy to let them join them because they'll do anything for their leader.

Summary: The Rocket Man finally makes it out to sea. As the train connects with the tracks, Luffy has to rescue Chimney before she's thrown off by the wind. In the meanwhile, Iceburg has a flashback about when he finally met Franky again in Water Seven. With Luffy and Chimney safe in the train, Paulie tells his fellow carpenters who the real culprits were. The Strawhats, Franky Family, and Galley La Company form an alliance.

Summary: Luffy and Zoro perform a move that acts similar to a cannon and blasts a hole through the wall of the tidal wave ahead of them, opening up a channel for them to pass through. They miraculously pass through unscathed and the passengers rejoice. Sanji contacts the rest of the crew and fills them in on his current situation. Usopp separates from them but later, when Sanji and Franky are spotted, a man named Sogeking comes to their rescue.

Summary: Sogeking makes his grand entrance. Franky and Sanji aren't fooled by his costume but they try to humor him. They devise a plan first, then detach the last two cars and fight their way through the rest. Back in the Rocket Man, Luffy, Zoro, Nami, and Chopper get an outfit change; Nami shows off the weapon Usopp upgraded for her while he was still with them.

Summary: Kalifa updates the CP9 on the situation with Franky, Sanji, and Usopp. Sanji tells Franky and Usopp to go on without him so he can fight Wanze and his "Ramen Kenpo". Franky begins to fight Nero, CP9's "Weasel", and Sogeking meets with Robin.

Summary: Franky's fight with Nero continues. Nero discovers that Franky's weak spot is his back, so Franky lies down flat so he can't get to it. Nero demands that he fight seriously, so Franky gets up to perform his "Centaur" form. Sogeking talks with Robin and tells her that the crew knows about her reasons for leaving. Those on the Rocket Man encounter the discarded cars and Zoro slices them so they can pass.

Summary: Zoro clashes with "Ship Cutter" T-Bone. The fight is short and Zoro joins the crew again in the Rocket Man. On the Puffing Tom, Sanji beats Wanze beautiful, though Wanze thinks he's ruined his face. Franky finally gains the upper hand against Nero and defeats him. After beating their respective opponents, Franky and Sanji stand to fight against the other CP9.

Summary: After hiding under Robin's cloak for a few episodes, Sogeking finally shows himself. They stumble into the room with the CP9 and meet with Sanji and Franky. Sogeking produces a smokescreen. The four head into another car, detach it, and escape. It's not long before Blueno pulls their car back, though. Franky knocks down the wall so they can escape but ends up on the enemy car. Blueno opens a door then back in the Strawhat car.

Summary: Robin willingly follows Blueno into his improvised door and Sogeking and Sanji are left alone. For a while, Blueno explains a little of Robin's past involving the Buster Call. Back at the Rocket Man, Yokuzuna the frog jumps onto the front of the train, knocking them from the rails. After Kokoro speaks with him, he joins the group. The CP9, Franky, and Robin finally reach Enies Lobby and disembark.