You are their drug, but are you making them better, or worse? - Seven severe paranormal cases. One person, to save them. You have been a member of the P.I.A (Paranormal Investigation Association) for years under your boss, Bang Shi hyuk, and never once have you come across such severe cases of possessed victims. It's your job to save them from these sinister entities, and help them with their rehabilitation. However something darker is at play here, and you have become the centre of it…