Three years into her marriage, Yuki has endured daily sexual harassment from her lecherous father-in-law. Reaching her breaking point, she is eventually raped by him. Despite her fear, she becomes increasingly sensitive to his slimy, persistent caresses. Ultimately, she allows him to creampie her, plunging herself into despair. While hiding the affair from her husband, she confides in him, leading to an agreement for the father-in-law to move out. But even after his departure, he continues to manipulate and molest Yuki’s body, sparking a new series of escalating problems.