圭吾的情妇是 22 岁的美智子，他对每周三天的会议感到不满，最终将美智子带到了他家。妻子里美心中沉睡的背叛欲望终于因丈夫的异常而爆发，如水坝般决堤而出，最终化为“双婚”策略，远远超出了丈夫的不忠……

Keigo, whose mistress is Michiko, 22, is unhappy with meetings three days a week and eventually brings Michiko to his home. The desire for betrayal that was sleeping in his wife Satomi finally exploded due to her husband's abnormality, burst out like a dam, and finally turned into a "double marriage" strategy, far beyond her husband's infidelity...