A NEET son who ends up living with his younger stepmother due to his father's remarriage. - A young wife who got married but was frustrated with her husband who was always on business trips turned to her unemployed and older son-in-law as an outlet for her sexual desires! - ! - In order for her younger mother-in-law to discipline her useless son who indulges in masturbation without even working, the young wife gradually becomes more extreme. - Mother and son fall into a lustful physical relationship as they are played with by their younger stepmother! - !