Ryoko and her husband are a Tokyo couple in a loveless marriage that is on the verge of being turned upside down. Ryoko has developed a deep resentment after years of her husband's selfish behavior and is desperate for a way out. She begins to harbor deadly designs against him. On this particular day, Ryoko has a sudden and fiery love affair with Satoru. He has been pulled into Ryoko's cold machinations, a plan that could wreck both of their lives. Guilty love gives way to panic and then outright conflict, followed by chaos and confusion,yet the film preserves its sense of humor all along. A common thread of true relationship weaves its way through the story, tying together the tension of the disparate scenes.