In a world that has eradicated war, private contractors enlist fighter pilots known as Kildren to perform in an endless war that people watch on TV. Kildren don’t age, and live in a state of eternal adolescence until they die in action. When pilot Yuichi Kannami arrives to his new airbase, the only things he recalls are that he’s a Kildren and how to operate a fighter plane. Base commander Suito Kusanagi behaves as if she’s been impatiently waiting for him. What does Suito know about Yuichi’s past?