Two couples spend the weekend in an abandoned cabin in the woods under the pretense of hunting for ghosts. Ivy and her boyfriend Nick have a sinister ulterior motive: to sacrifice the unsuspecting Regan and her boyfriend in order to unleash an evil entity from the cursed forest. The ritual, however, summons not one, but two powerful demons: the perverse Incubus and sexy Succubus. After awakening from a millennia-long slumber, the dastardly duo plan to fuck and kill anyone who stands in their way, until they can walk amongst the living as immortal beings.