Bocca Serenade, is unhappy with his high school life. And wants to become a warrior like the ones from the story told to him by Tsunagi.

Bocca has become a Meros Warrior, and Tsunagi gives the young warrior his own Aibar machine. Left with more questions than answers when Tsunagi abandons him, Bocca once again encounters the pickpocket…

After going on their journey, Bokka and Sayako arrive in a town called "Bakuyagou", or "White Night Cape", where it's always dark, and morning never rises, making it a perfect place for tourist attrac…

Bocca finally learns that the robot creature he fought before was from the organization, Monster Union, who are humans who serve under the monsters, using the robot creatures as their weapons.Keiko Ha…

Although knowing the problems of White Night Cape, Bocca continues to try and destroy the Monster Union robot creature. Everyone in the town knows of his intentions, and sends Bocca into jail. Sayako …

While following Kurofune, Bocca and Sayako encounter a dead end, but finds 'Nezumikoukoku', or 'Pyramid Scheme Valley', and also find a dam with a mural of a tear on it. The duo goes to it, and find a…

Bocca learns that the girl who had aimed her arrow at him is named Tone. And she appears to hate Melos Warriors. He also learns that the technique that she uses to drive the "working mouse away" is a …

Eichi completes the mural on the dam's wall, he tells Tone that the rest will be left to them before he leaves. Miri under the orders of the Monster, rides her 'Rat Monster' for a final battle with Bo…

Bocca and Sayoko arrives at a huge industrial region. Sayoko befriends a strange girl by the name of Coco. Coco tells Sayoko that she is involved in a theatrical play nearby. Bocca and Sayoko later me…

Bocca meets up with his old friend Tsunagi. Tsunagi tells to Bocca about the Space Fort named Mitranome, and about 'Engine One'. The team intends to destroy Engine One, but Bocca wants to save Sayoko …

Bocca and the team successfully saves Sayoko. Sayoko reveals to them that there are still people in Engine One. They decide to try and save them too. The Monster Union member is later defeated in batt…

In Bocca and Sayoko continuing search for Kurofune, they find Kurofune's Aibar machine, "Jaguar of the Sun". The Aibar machine reveals to them that Kurofune is on a very strange island. They try to ma…

In this labyrinth, where space and time can be curved or warped, Bocca is able to meet with the child sacrifice, Solo, as well as Kurofune. Bocca witnesses the battle between Horu and Kurofune that ha…

Bocca meets with Kei in the illusionary bus. They share thoughts about their dreams, and Bocca reveals his feelings for Sayoko. He learns that Kei and all the rest of the children that Horu, the monst…

Bocca and Sayoko arrives at a tourist spot. Sayoko's investigation into the place reveals that several tourists have gone missing there. They spot the body of Tone's Aibar machine, Skyblue, the blue e…

With Sayako and Toune trapped in the castle of Lucky Thoroughbred, Bocca and Koko sneak in to save both. While on the way in, the two get more than a bit comfortable with each other, and Coco tells he…

Tone and Sayako are held hostage in the tower. And Coco and Bocca have gone in to rescue them. However, Shuuma has explosives planted all over the castle and he will not hesitate to set them off.

Sayako receives a message to return home. But she wants to know where her relationship with Bocca is going first. The Armed Theatrical Group arrives to search for 'Engine Two'.

The kidnapped prime minister is interrogated by the Armed Theatrical Group. The prime minister reveals his intended deal with the Monster Union. He also mentions about his lost daughter. The origin of…

Coco meets her dad finally. The warriors must defeat Electric Sheep. And Bocca and Sayako may have to split.

The Meros warriors are on the Mahoroba and on a course to Mitranome. But the space port is guarded by the monster union and they intend to stop them.

A new unicorn series is discovered in the ship, but he is not on the side of the Meros Warriors. The battle in the Mitranome goes on.

The Vinderlize intends to destroy the Mitranome. Child Dragon utilises a weapon that can immobilise the Aibar Machines. And the secret of Project Silent is revealed.

Bocca returns to Earth and finally meets the Monster King. The Monster King reveals the secret about the Melody of Oblivion.