Kobayashi, who had been living alone in the city, leaving his wife behind, was spending his days relieving stress through gambling to alleviate loneliness and boredom, eventually falling behind on rent. Then, the landlord's wife, Senri, came by. The kind-hearted Senri, who always cared for Kobayashi, surprisingly offered to forgive the overdue rent in exchange for a physical relationship. As Kobayashi was used as a release for Senri's sexual desires, a neglected wife with unmet needs, he gradually sank into a sordid affair with her.
