In a world where war has become a form of entertainment, "Killdre"—pilots who do not age and remain adolescents—fight and die in the skies. Kannami Yuuhich, an ace "Killdre" pilot stationed at an air base near the front line, meets a female "Killdre" officer named Kusanagi Suito. Amidst their daily routines marked by death and killing, the relationship between the two "Killdre" begins to shift in an enigmatic manner...