Summary: Riku's eyes are now open and he is wondering about his current condition, including his incessant thoughts of Saya and his unquenchable thirst. Kai tries to make him eat to prove to himself that Riku is not a chiropteran or Saya's chevalier, but a human. However, Riku is unable to eat much and can't get to sleep at night. The Schiff attack the ship and Riku is injured by one during the fight. After seeing Riku is now Saya's second Chevalier, they flee as Riku burns with pain from needing blood. Kai allows Riku to feed on him and is thanked sorrowfully by Riku for doing so.

Summary: Kai finds out that Riku is now a chevalier. He wanders around Paris wonder what he can do, when he meets Irene on the observation deck of the Eiffel Tower.

Summary: While the Red Shield is preparing for another attack by The Schiff, Okamura and Mao suddenly appear.

Summary: After the Schiff's attack, Saya agrees to share her blood with Irene. After drinking her blood, Irene's body crystallizes and shatters. The Schiff realize that they have been lied to and that it is Diva's blood they need to survive. They leave, taking most of Irene's pieces with them. Saya and Kai mourn Irene's death.

Summary: Saya visits Joel's Room at Red Shield headquarters and learns about her and Diva's beginnings as well as the 1972 tragedy in Vietnam from Joel's diary.

Summary: While Saya, Kai, Riku, and Hagi go on an outing and Riku tries to repair Saya and Kai's broken relationship, Diva demands Carl bring her "that boy," while Dr. Collins and Julia meet with Van about their research into chiroptera. Solomon meets with David and warns him that Diva's chevaliers plan to launch an all out attack on the Red Shield Headquarters in three days, and asks him to take Saya to safety. When David asks why, Solomon says it is because he doesn't want Saya to die. Solomon also reveals that the Red Shield has been betrayed from within. David quickly takes Saya and the others back to the ship, leaving Okamura and Mao behind. Solomon and the other chevaliers discover that Carl and Diva have disappeared. Dr. Collins reveals to Julia that he doesn't think chiroptera should be completely destroyed and that he knows about the planned attack on Headquarters. While the Red Shield prepares for the coming attack, Riku convinces Kai to play catch with Saya, which helps them finally return to normal. As they stand on the deck, Saya and Riku hear Diva singing just before Carl and Diva attack the ship. As Carl begins killing the Red Shield operatives, Diva wonders where "that boy" is.

Summary: Saya and Hagi search for Diva as Kai and Riku go to join David. Kai hears men screaming and goes to investigate, leaving Riku alone on one of the decks. He can hear Diva calling for him, but Kai returns and they head to the conference room. Saya finds Carl, but leaves Hagi to deal with him and so she can continue looking for Diva. Kai and Riku join some of the operatives at and elevator that will take them to the conference room, but when it arrives Diva is in it. Kai grabs Riku and runs, taking refuge in a storage room, while the men try to stop Diva. Saya finds the men's bodies, but Carl appears again and she's forced to fight him. Joel and David agree to activate the ship's self-destruct sequence to try to entomb Diva in it. Kai and Riku hear the warning about the self-destruct sequence, but Diva finds them. Kai shoots her, but she instantly heals and she knocks him away, leaving him barely conscious while Diva rapes Riku. Saya and Carl's battle takes them to the same room, where Diva is holding Kai and threatening to give him her blood. Saya stabs her, but as she forgot to add her blood to her sword, Diva just laughs and shoves her away. When she falls, Saya spots Riku's naked, cracking body near by; Diva taunts Saya that she gave him her blood, killing him. As Hagi holds off Carl, Kai and Saya watch helplessly as Riku's body shatter completely. David and Lewis find them and lead them back to the ship deck. They had tried to seal Diva and Carl in the ship's hold, but they easily break out and Carl seriously wounds Joel. Saya and Hagi stay to fight them while the others get away to safety. As Kai watches from the departing helicopter, the ship explodes.

Summary: One year has passed since Riku's death and the destruction of the Red Shield Headquarters. Kai, Lewis, and David are now in London, living at a shelter for war orphans run by Gray, an ex-military man and David's former instructor. Kai now wears the crystal chunk from Riku's body around his neck in the form of a diamond-shaped pendant. Devastated by the events and with his spirit broken, David lives in a drunken stupor. Joel, confined to a wheelchair from the injury Carl gave him, brings Kai some special bullets they hope will be able to kill chiroptera. He also reveals that Julia is in the United States with Collins. Joel thinks David hates him for what happened and he blames himself for Riku death. Kai tells him he is determined to stop Diva and her chevaliers, and that he must do all that he can until Saya returns. Gray lectures David on his walling in self-pity when Kai has turned his loss into his strength and found his purpose. Later, Kai pours out all of David's alcohol, asking him what he would say to those who died. David says it is pointless without Saya, and Kai yells at him it is his job to wait for her. Meanwhile, in the US, James and Van give a demonstration of their new soldiers, the Corpse Corps. Three of the soldiers kill a single chiropteran, and Dr. Collins tells Julia they don't need Saya anymore. The US agrees to use them. As the Corpse Corps are transported, several Schiff watch from the shadows. That night, Kai and Lewis are out hunting chiroptera, but the new bullets do not work. As they find themselves surrounded by three chiroptera, Saya and Hagi appear.

Summary: Saya saves Kai and Lewis from the chiroptera, but collapses afterwards. They take her back to Gray's house to recover. David learns Saya is at the farm, but doesn't react. When Monique touches the sleeping Saya, Saya pops her awake and almost attacks her. She barely acknowledges Kai's presence and calls Hagi to leave. Gray won't let her leave while she's still weak, though, and manages to get her to stay for breakfast. Kai tells her about David, but she cuts him off telling him it isn't relevant to her and that he should go back to Okinawa. Hagi finds David throwing up behind a building and asks if he's given up fighting. While they talk, a chiropteran attacks the farm, having followed Saya's scent. It gets upstairs and goes after Monique. Kai shoots it but is knocked aside. David also shoots at it, but is attacked. Saya, unable to find her sword, attacks it with a kitchen knife coated in her blood and kills it, then leaves with Hagi. As they walk through London, they spot an advertisement for a performance by Diva, who has changed her appearance to look similar to Riku. David and Kai also see the ad on TV.

Summary: James uses the Corpse Corps to attack the Schiff. During the battle, it is revealed that they are "improved" clones of Moses. The Schiff, already suffering from Thorn, are being badly beaten. Lulu manages to escape and runs to where Saya and Hagi are resting in a church. Lulu begs her to help them before collapsing from her own wounds. Saya agrees to go, but when they arrive at the warehouse, Dahz is dead, and Gudrif dies shortly afterwards. Only Moses, Karman, and Lulu are left. James reports back to Amshel that he wasn't able to kill all of the Schiff, but Amshel says it is no problem. Amshel puts James in charge of killing Saya despite Carl's objections. That night, the last three Schiff bury their comrades. Lulu asks Saya if she will fight with them to defeat Diva, but Saya says she fights alone, and will not grieve the loss of anymore comrades. Lulu tells her she has lost her hope. She also tells her where Diva will be. As Lulu leaves, she asks Saya to please remember her, because she doesn't want to be forgotten. The three Schiff go to the museum and again fight the Corpse Corp. They are losing when Saya and Hagi arrives. When Saya destroys one of the Corpse Corp, the other two retreat. Moses, Karman, and Lulu pledge to go with Saya, not as help, but because it is the only way they can survive. Meanwhile, David goes to see Joel, sober and no longer drinking. Joel tells him he wants to revive the Red Shield. He later meets with Okamura and Mao and asks them to find out who is sponsoring Diva's upcoming concert.

Summary: James and Diva leave to go to a luncheon, but Diva gets him to take her to Royal Covent Garden so she can sing. David meets with Mao and Okamura who tell him that Diva's opera is being jointly sponsored by Cinq Fleches and Goldsmith Holdings, that the two companies have partnered to produce food for the military forces across the countries, and that they have a research facility on the outskirts of London being run by Van. David uses a stolen ID to infiltrate the lab where he discovers Julia and learns a little more about the research being done. He's almost captured by Van who remembered David from Vietnam, but David instead uses Van as a hostage to escape. At the opera house, Saya, Hagi, and Kai battle with James while Nathan watches. Saya's sword is unable to penetrate James' iron-like skin, leaving James an opportunity to kill Saya. However, Nathan stops him and makes him leave, promising Saya he would find her a "suitable" stage to die on. Weakened from the battle, Saya feeds on Hagi. Kai turns away, then looks back to find both have left.

Summary: Gray and the others prepare for Javier's birthday party. While shopping with Monique, Kai spots Saya and Monique asks her to come to the party, which Saya agrees to do. Karl steals the Corpse Corps without Amshel's permission to go after Saya and Amshel sends Solomon after him. While Kai and Saya are talking, Karl arrives to battle her. Hagi, the Schiff, and the others deal with the Corpse Corps while Saya battles Karl. Karl grabs Saya from behind and bites into her, planning to drink all of her blood to kill both her and himself. Solomon arrives and cuts off Karl's arm, giving Saya the chance to stab him through her own body killing him. He orders the Corpse Corps back to their beds, and before disappearing, tells Saya that Diva is on her way to Christina Island.

Summary: Unable to get a boat on her own, Saya reluctantly agrees to go to Christina Island on the boat the Red Shield and the Schiff accompanied. When they arrive, the three Schiff go off on their own, despite Kai's warning to stick together, and engage numerous Corpse Corps. David, Lewis, Kai, Saya, and Hagi continue towards where they believe Diva, but first must face off against James. While Saya continues to battle James, Kai takes Hagi to save the Schiff. With the help of the Schiff, Saya is able to strike James with her sword. As he falls into a huge tunnel, he manages to pull Saya and Kai in, but Solomon appears and saves them both. He tells them that it was a trap set by Amshel to see if Solomon would tell Saya and that Diva is on her way to New York. Before leaving, he tells Saya he is in love with her and will always be on her side.