混黑道的不良青年純平（野村周平），接到組長命令，要去暗殺對立組幹部，此時，他偶然遇到OL女主角加奈（柳ゆり菜），電影講述兩人一起行動，3天內發生的青春故事。21-year-old Junpei is a low ranking gangster. He is busy taking care of miscellaneous works. One day, his boss gives him a mission to kill a high ranking gangster from a rival group. Junpei wanting recognition from his group, accepts the assignment. Junpei meets Kana and they spend the night together. He tells her about his assignment. She thinks his enthusiasm for the job his assignment, but she also feels some excitement. She stays with him for 3 days until he carries out his mission.
