Hideo Aiba is a reserved and obedient high school student, who has never had any girlfriend. He spends all his energy on masturbating, his true reason for living. His life and his solitary activities will take a radical change when a new transfer student, the sexy Kurumi Sahana, joins his class.

After a successful robbery, three thieves get notice by some gangsters, while all at the same time accidentally releasing a chemical that brings the dead back to life. They must team up if they want a chance to survive the night.