Jang Man Wol (IU), the thousand-year-old proprietor of the supernatural Hotel del Luna, is doomed to manage it until she finds someone who has committed a worse sin. When Goo Chan Sung (Yeo Jin Goo), a meticulous former hotel assistant manager, is forced to work at Hotel del Luna due to his father's past deal with Man Wol, their unlikely partnership begins. As Chan Sung brings order to the hotel that caters to lost souls, he may be the key to helping Man Wol break her eternal curse. This is a 2019 South Korean mystery-fantasy drama directed by Oh Choong Hwan.

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