Leah, the daughter of the Cruz family, appears to be a "fierce delicate flower" who throws money around in nightclubs and acts in a cynical way on the surface. In reality, she is a down-and-out heir whose power was seized by her stepfather. During a misunderstanding, Leah, fueled by alcohol, generously spent a large sum of money and "kept" Allen, the "bankrupt noble young master" — little did she know that this man whom she could pin against the wall and whose shirt she tore open was actually the person in power of the Smith family, a mafia clan. A misunderstanding about "keeping someone" kicks off: He can wear an apron and cook dinner, and when she is framed by her stepsister Lisa, he will press the muzzle of a gun against the forehead of the enemy. She once thought that he was a person in distress who needed her protection, but when she herself was in trouble, she discovered that the overwhelming power of the Smith family could be casually wielded by him — she thought she was the hunter, but she didn't know that from the moment she pinned him against the locker, he was willing to shed all his disguises just for her... Let's see how Leah makes a comeback from the "sugar mommy" to become the wife of the mafia boss, staging an ultimate love story between two powerful individuals where "You hide your power to protect my vulnerable part, and I shed my thorns to give you my sincere heart."