On a summer night, in the dimly lit second floor of a traditional Japanese house, a heated mahjong game is underway. The men gathered around the table grow more excited as the match intensifies. Meanwhile, downstairs, the beautiful wife Natsumi keeps an eye on the situation upstairs. Her husband, who has dabbled in every kind of gambling, pours all his money into the games and loses, only to pour in more and lose again... Despite this, Natsumi manages to make do with the bare minimum of money. However, when her husband runs out of mahjong tiles after a losing streak, he offers Natsumi's body to the men as compensation for bringing snacks.
