Yasuo is a gangster just released from jail. Believing his boss double-crossed him, enraged Yasuo is on his way to find the boss. But before setting out for the dangerous trip, Yasuo asks Kenji to take care of his mentally challenged sister, Yuri, and a mysterious black bag.

Ikuko is a mature, reserved Kyoto woman married for many years to a respectable, now-middle-aged man. The only problem in their relationship has been that her husband is dissatisfied with her lack of passion during lovemaking. All this changes after they meet the young Mr. Kimura