You are a mental patient who has no emotions and never smiles. All the hospital staff think you are the most difficult patient. You don't talk to anyone, even doctors avoid you. But all this changed one day. Park Seonghwa, the new employee, has changed your sad life. From the first time he saw you, he admired your beauty, fell in love with you, and is trying to do everything to heal you. I am always cold, mean and harsh to him, but he is devoted to me without ever complaining.