A magical love story involving a man who lives his life like a ghost and a country girl that falls in love with him. On a rural mountain in Jumunjin, South Korea a girl named Jina (Hwang Bo-Ra) runs a mountain lodge. The place is soon set to close down because of rumors that ghosts live in the lodge. Jina then encounters a ghost (played by Kim Ki-Bum) who she takes an interest in. But, the closer she gets to help him the further the ghost pushes her away.

Bok-Nam (Park Yoo-Sun) is an elementary school student who feels like she just doesn't fit in. She lives with her family that consists of her grandmother (Kim Ji-Young) with Alzheimer's disease, mother (Lee Mi-Young) who runs a chicken restaurant, unemployed father (Lee Sung-Min) and bully older sister (Nam Bo-Ra). Bok-Nam is not happy with her family. One day, she begins to think that she is Flashman, who came from outer space, and she wants to return to her place of origin.