A young man with an unique ability begins working for a centuries-old bar owner who resolves her customers' emotional troubles by entering their dreams.
The Water God Habaek visits earth to fulfill his mission with the help of his servant in the human world, named psychiatrist Yoon So Ah, whose ancestor have promised to serve The Water God for generations.
An extraordinary road to emotional healing opens up for an selfish antisocial children's-book writer and a selfless psych-ward caretaker when they cross paths.