A tour guide becomes the live-in doctor for the leader of a famous idol band who suffers from sleepwalking.

The drama will be a story of romance and healing between one of the world's greatest idols who is suffering from somnambulism and the doctor who is secretly treating him. Yoon Tae In is an untouchable idol star who is loved all around the world, and a musical genius who believes he is the center of the universe.—mydramalist