An evil force of ninjas is invading the city and only a female ninja named Haruka can defeated the foot soldiers. Meanwhile, Takamaru is a student at the Ten Treasure Academy. He lives a normal school life, looking for romance. Until the day he fell in love with a transfer student with Haruka. They had sex to replenish her power so she can fight again the evil ninjas until one day she was caught by the evil villain. How he can saved her from the evil perverted deeds of the villains.