Cho Yeon, a shaman-in-training, climbs a haunted mountain where seven women have gone up and been returned with no memory. She meets a mischievous, hopelessly horny ghost who’s more interested in romance than haunting. Unable to seal him, they strike a deal: he helps her gather spiritual energy, and she’ll help him avoid becoming a vengeful spirit. But every time he aids her, they must get intimate. When a mysterious man appears knowing her past, Yeon’s journey becomes even more complicated.