Because of the debts her husband has taken on, married woman Rena decides to sell herself to a secret club introduced to her by an investment company without her husband's knowledge. The secret club has clients with a hardcore SM habit. Rena, a chaste married woman who knows nothing, even sheds tears when she is given a blowjob during her interview, but that is just the beginning of the horrible shame and pain. Rena, who cried at the shame of being tied up and cried at the humiliation of an enema, gradually sinks into the depths of masochism, transforming into a married woman slave who accepts constant anal plug insertion, upside-down hanging, whipping, candles, fisting, double penetration, and even anal creampies while sobbing... This is the first full-scale SM work by Sanwa Publishing's first exclusive actress, Ai Kisaragi Rena.