A series of murders leads to the wrongful arrest of a brilliant but clumsy exorcist, Son Youngtaek. At the police station, Youngtaek notices the homicide detective interrogating him has been marked with a ghost tattoo. And she'll be dead in a matter of days. Despite being a suspect, he tries to convince detective, Jung Yein, that she's in danger and he's the only one who can save her. But will the dete