The Hotel del Luna is located in downtown Seoul and has a very old-fashioned appearance; however, it has a charming interior that only its ghostly guests can enjoy—so there are ghosts wandering through the halls. Jang Man Wol is the hotel’s CEO, but because of a mistake she made many years ago, she has been under a curse for over 1,000 years and has been confined to the Hotel del Luna. She is beautiful and elegant, but she isn’t kind to others. She is also fickle, suspicious, and greedy. Goo Chan Sung is the youngest assistant manager at a multinational corporation and a perfectionist. He appears composed, but in reality, he has a tender heart. Following an unexpected coincidence, he begins working as a manager at the Hotel del Luna.