Bokura no

A group of children at a summer camp find a man named Kokopelli in a seaside cave. He invites them to try a game in which they pilot a giant robot to defend Earth, and most agree without understanding the contract they have made.

The battles are real, and so is their cost. Each child must face the prospect of taking a turn in the cockpit while returning to a home life filled with unfinished troubles. Saving the world becomes inseparable from deciding what their own brief lives, and the people in them, mean.