Kobayashi, who left behind his wife and children and spent his days relieving stress by gambling to kill his loneliness and free time, finally fell behind on his rent. Then the landlord's wife, Chisato, arrived there. The kind-hearted Chisato, who always cares for Kobayashi, offers to have a physical relationship instead of forgiving the illegal act. Kobayashi falls into Chisato and Muddy's unfaithful relationship by being used as an outlet for the sexual desires of a frustrated wife who doesn't care about her husband.