Mami was in dire straits. She had used up her husband's savings and even got pregnant by him. Desperate for money, she considered using her father-in-law, who happened to be visiting at that time. She tried various methods to hide both her financial troubles and pregnancy, but ultimately blamed everything on her father-in-law when he found out about her deception.

「マミ」は窮地に立っていた。夫と貯めていた貯金をホストに使い込んだ上にその子供まで身籠ってしまったのだ。彼女はたまたま来訪した義父を利用できるのではないかと考え、あの手この手を使い金と妊娠の事実を隠そうとした。その顛末は、金の使い込みと妊娠の責任を全て義父に押し付けたのだった…。