To pay off his debts, her husband Yuya was captured by the Yakuza and sent to work at demolition and industrial waste disposal sites. However, one day he breaks down and is no longer able to work. Driven to his limits, the Yakuza member Takimoto makes a wicked proposal to Yuya: "Why don't you send your wife to work at the workshop?" Unable to resist, Yuya has no choice but to accept the proposal. And so, Yuya's wife Rio ends up working as a sex slave in addition to her work at the workshop...