On a summer night, in a quiet Japanese house, mahjong is underway on the second floor under dim lighting. Men gather around the table, deeply engrossed in gambling, growing more intense as the game heats up. Downstairs, the beautiful wife, Natsumi, quietly watches the situation unfold. Her husband, obsessed with gambling and constantly chasing bets, juggles money regardless of winning or losing. However, after a losing streak in mahjong, his funds dry up and he runs short of scoring sticks. Desperate, he offers his wife Natsumi's body to the men as collateral.