Suddenly emerged mysterious aircraft, Zai. It overwhelmed the air fighting power of mankind. Developed to combat them, a weapon called “daughter” which modified the existing aircraft. The maneuver called “anima” manipulates. It was – a girl’s figure. It was the crimson shining fighter, and Anima Gurpen penetrated it that Hironari Nagaya met. The story of a girl in the trump card of mankind and a boy who is burned in the sky begins.