The Shiraishi couple are not wealthy, but they have built a happy life together. Then the husband's brother disappears after taking on a massive debt, leaving the husband, his guarantor, at the mercy of vicious loan sharks. With no way to repay them, he is confined to stop him from fleeing. When the collectors see his beautiful, big-titted wife Marina, they decide her body will settle the debt. Priced from just 4,500 yen, she is forced into a bottom-tier brothel where customers fuck her raw one after another, with no time even to shower, turning her into an unprotected creampie sex toy.