For her first day of orientation, Dr. Tristian Mackenzie makes her way to the Silverdale Psychiatric Hospital for the criminally insane, where she learns of the strange series of cases from the similarly strange Dr. Moon.

A group of friends take their recently sober friend, to the remote Hills to help him stay clean. But when eerie events unfold and people start disappearing, they must question whether it's the Boogeyman or their own unraveling minds.