Upon hearing that her sister was staying at their parents' home due to a marital dispute, Jurie (Akari Asagiri) learns that her brother-in-law is alone at home. Concerned he might be struggling, she rushes over under the pretense of offering care and mediating the couple's conflict, successfully getting herself invited in. With her sister away, Jurie seizes the chance to spend time alone with her brother-in-law, secretly smiling to herself in satisfaction. Tonight, there will be no interruptions—only time with him. And her true intention? To have her way with her brother-in-law's body.