A son and his wife who have decided to live with their father-in-law who lives alone. Not knowing that her father-in-law likes big boobs, Leona, a housewife, spends her days defenselessly. Leona's fluffy chest unconsciously stimulates her father-in-law's lower body, and when she sees her father-in-law who endures it, Leona plans to seduce her to buy a brand-name product. Father-in-law who can not stand the provocative behavior of Leona and makes a mistake. The father-in-law, whose tag has been removed once, forgets that he is the daughter-in-law of his son and relentlessly devours his lust.