Two beings from opposite sides of the galaxy, Tsutomu and Birdy, become an unlikely pair. They have nothing in common, until Birdy's colossal energy blast mistakenly takes Tsutomu's life while apprehending a hazardous extraterrestrial. Oddly enough, they now share the same corporeal form. Except, when Birdy isn't the puppet master, controlling Tsutomu's body as if it were her own, Tsutomu discovers he can transform into a female, much to the surprise of his acquaintances.