In episode 1, Fumi, grieving after her husband's death, drunkenly visits her daughter's home seeking comfort, only to find her daughter away on a business trip abroad, leaving her son-in-law alone. She's caught masturbating by him, gives him a blowjob when he gets erect, and ultimately gives in to desire, seducing and sleeping with her daughter's husband. In episode 2, with her daughter hospitalized, Kyoko asks her son-in-law to help her with sexual release and performs a blowjob on him. However, she ends up seducing him, leading to passionate creampie sex between them. In episode 3, Sayo, exhausted after a night shift, is caught masturbating by her son-in-law. Embarrassed and aroused, she nearly cries out but reluctantly gives him a blowjob, eventually giving in to her lust and engaging in intense sex with him. Each episode features a different woman—mother-in-law, stepmother, or close female relative—developing a sexual relationship with the son-in-law, driven by loneliness, temptation, and raw desire, unfolding into explicit creampie-filled encounters.