When a seventeen-year-old girl accidentally saves the life of a cold-blooded mafia king, instead of becoming a victim in a gang fight, the girl becomes the wife who turns the fierce mafia king into a sweet boy. She is innocent and cute, he is cold and decisive. He is almost ten years older than her, but he cannot resist the special feeling she brings to him. She scorns his complex, dark world, yet is unconsciously drawn to his dangerous aura, not to mention, her family, which is no better than anything sinister in this world. And so the fates of the adorkable girl and the young mafia king become entwined ......