A kid with nothing but wrench skills and stubbornness decides to fight back against four world powers occupying his country. His weapon is a mecha that thinks for itself, which means he's not piloting alone, he's partnering with an AI that questions his choices and forces him to actually earn the fight instead of just winning it. The show understands occupation as a grinding, personal thing: not a backdrop for spectacle, but the reason a mechanic's kid picks up a gun.
Japan in 2061 is carved up between four global superpowers, each controlling their own territory through military occupation. The people live under constant surveillance and restriction, trapped in a system that feels inescapable. Giant humanoid war machines called AMAIMs patrol the streets as symbols of foreign dominance, a reminder that resistance seems futile. Amou Shiiba is an ordinary teenager obsessed with mechanical engineering until he encounters Gai, an AI with genuine consciousness and opinions of its own. Gai sees potential in Amou that he doesn't see in himself. Together, they begin building Kenbu, a custom AMAIM designed not for conquest but for liberation. What starts as a secret project becomes Amou's path into an underground resistance movement fighting to reclaim their nation. The series balances intimate character moments with large-scale mecha combat, asking what it means to fight for freedom when the odds are systematically stacked against you. It's as much about young people finding purpose as it is about the machinery they pilot.