Gabby is a young wannabe mechanic, who has just moved into a new neighborhood in the suburbs of Maryland. On Halloween Night, she encounters a slew of trick-or-treaters who tell her of a local legend called the Goatman. Soon after, a masked intruder who bears an eerie resemblance to the mythical Goatman breaks into her home. A violent game of cat and mouse ensues, pushing Gabby to her mental and physical limits.

"Half man. Half goat. All Hallow's Eve."