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, Sayako. And the pair soon finds trouble in school. Hor appears again to eat Elle, the daughter of the local Monster Union Agent. After Kurofune and Bocca fight him off and destroy his bus, Hor retreats. Kurofune heads away with a warning not to follow him to Sayako. Bocca and Sayako then say goodbye to Elle and drive off on Bocca's Aibar.