Six months into their marriage, housewife Yuka and her surgeon husband are living a distant life due to his demanding job. When her brother-in-law, who had been abroad for culinary training, returns and moves in with them, Yuka begins to feel emotions she hasn't experienced before. Unfulfilled by her husband, she becomes the target of her brother-in-law's desire for her voluptuous, attractive body. He proposes a twisted deal: in exchange for a loan from a high-ranking bank executive, Yuka must offer her body. But the executive is connected to loan sharks, and a dark conspiracy lurks beneath the surface.