When ex-mercenary Gyuwon Kim returns to Korea after his retirement, he has just one goal in mind: earn enough money to get plastic surgery. While having a face that is capable of making even a grown man cry in fear came in handy as a mercenary, what Gyuwon really wants is to be the one crying himself at the hands of a ruthless master. The perfect opportunity comes when Gyuwon is hired as a bodyguard to protect the precious youngest son of the Yoon Clan, Hwayoung Yoon, from a recent stalker. Unbeknownst to Gyuwon, hidden behind Hwayoung’s pretty face is actually a sadistic dom who already has plans to make the vicious-looking man his new pet.