After her uncle took the family business Boyar from them, her father was driven to death, and she was also evicted from Lee's Mansion. To get Boyar back, Lee Seira spared no efforts to make herself the woman of Park Jongseong, the young master of Park Group. But will Park Jongseong, a high-handed and hardhearted man, help her? Will a marriage based on a transaction be a truly happy one?