 Hwa-young believes that Yeon-hee, her brother's ex-girlfriend, drove him to his death.When the unhappily married Yeon-hee is diagnosed with uterine cancer, Hwa-young volunteers to become a surrogate mother for her, all the while planning her revenge.Hwa-young conceives and gives birth, lets Yeon-hee raise the child, then destroys Yeon-hee by trying to take the child back.