Anuki is a boy caught in a war between two countries. When he was small he was abandoned by his father so that a princess could be saved. This event triggered amnesia in Anuki, as such he doesn't remember his childhood.

As he grows up he decides to join a flight of mercenary units to be trained as a pilot so that he can help in the war, there he becomes the ace pilot and is highly acclaimed for his skills. But is he fighting for the right side?