Bokurano opens at a seaside summer camp, where fifteen children discover a hidden cave near the beach and meet a mysterious man named Kokopelli. He offers them a bizarre game: each of them must take turns piloting a giant robot to defend Earth from alien attacks. Most accept under the assumption that they are testing a simulation, but the first battle makes it clear that the contract is real, and that every victory carries a terrible cost.
As the children are pushed into battle after battle, Bokurano becomes a tense science-fiction and psychological drama about fear, guilt, and responsibility. The group must live with the burden of protecting a world they barely understand while also confronting the private secrets that influence how each child reacts to the fight. Their growing distrust, fragile cooperation, and mounting dread define the series as the rules of the game turn increasingly brutal. What begins as an impossible promise slowly turns into a grim test of character, forcing them to decide how much they are willing to sacrifice for strangers, for each other, and for themselves.
