Handson is a man with cold personality. He is a billionaire who is always surrounded by bodyguards, and is a dangerous mafia man. He doesn't care if he hurts anyone, but he is very handsome.

He meets a girl who is short and happy and completely different from him. She is a girl who was hired to protect him. At first, when he falls for her, she isn't aware of his feelings, but when she becomes aware of it, she becomes dangerously interested and will start killing people for him.