Hayato is an ordinary high school student. One day after school, he and his childhood friend, Kanami, are walking home together when, after an incredible event, he begins to see a strange female apparition. She is dressed in a military uniform and looks very impressive, but she is actually a microscopic life form that has taken up residence in Hayato's body. She is also the captain of a spaceship. When the extremely small space warrior enters Hayato's body, he becomes a two-meter-long spaceship! In order to protect Kanami from enemies from outer space, the human spaceship Hayato will resolutely fight on the stage of the small town!