Eleven years after a demonic murder, Baek-hyun meets a female ghost, Seo-jun. Together, they team up to perform an exorcism on spirits who are haunting the halls of a nearby hotel. However, things get messy when Baek-hyun discovers that the same demonic presence who was in his body years ago is now possessing people once again. Will he and Seo-jun be able to stop the demon or will more murders happen?