A Former thug – Choi Mun-hyeok will do anything to protect his younger siblings. When he’s defeated in an underground fight club and sold in an auction to Seo Yeon-jin, he reluctantly allows himself to be put on a leash for his family’s sake. Seo Yeon-jin, on the other hand, doesn’t care much for the family. In fact, he intends to cause a scandal that will outrage his billionaire father by embarking on a twisted, carnal affair with Choi Mun-hyeok. All Choi Mun-hyeok needs to do is serve Seo Yeon-jin well, at work and in bed.