It tells the story of Adam Senft, a struggling writer who discovers that an evil satyr[1] has been summoned by Nelson LeHorn, a local witch.

Adam Senft, a struggling writer, is out walking his dog in the forest behind his house when he hears pan pipes playing.

Following the sound, he finds one of his neighbors, Shelly Carpenter, fellating the stone statue of a satyr which appears to change into a living creature.

As the police begin door-to-door investigations, Detective Ramirez questions Adam, and reveals that two more women have disappeared, including Shelly Carpenter.

Adam and a group of men enter the forest, where they find another large hoof print and a stone with strange lettering carved into it.

They leave their neighbor Cory to look after Tara and Claudine, then drive to the abandoned LeHorn farmhouse where they find Nelson's diaries, which explain how he summoned the satyr which impregnated his wife, whom he killed by throwing her from their attic window.

The satyr turns the hypnotized women on the men, while Adam's dog Big Steve attacks Hylinus, who kills it.