He's young. He's beautiful. He's a billionaire who owns the biggest company in Seoul but he's also a killer. His killing sprees are the only thing that can help him feel relax besides his wife. His married to the love of his life. The girl who became his first to many things. She has absolutely no idea who her husband is and he can't ever bring himself to tell her........He isn't willing to lose the person who he developed a dangerously obsession with.