Heeseung is a rich mafia boss while you(sunoo) we're his fox hybrid pet.

Recently, an accident happened. While Heeseung was working in his office, you came in and "bothered" him all because you wanted to celebrate your birthday.

you got locked in the attic room, with a tight chain around your neck and legs, there was only a thin blanket to keep you from the freezing air in the room. Today, Heeseung came back from work early because he was informed that you fainted in the attic.

He rushed to the attic and slammed the door open, only to find you on the thin mattress, lying down and unconscious, shivering and bruises on you.