Mei, who has been married to her husband Kazunori for three years, started living with her father-in-law, who was living alone.She thought that she would have a child and get along with her three generations, but the reality was not so sweet.Enduring sexlessness with her husband and sexual harassment from her stepfather, Mei had no choice but to masturbate quietly.However, when she is caught masturbating by her stepfather, she is relentlessly pursued.Although she gently refuses Mei, her father-in-law's naughty caress eventually turns into her pleasure.