While watching two children on Halloween night, a babysitter finds an old VHS tape in the kids' trick or treat bag. The tape features three tales of terror, all linked together by a murderous clown.

After Portland homicide detective Nick Burkhardt discovers he's descended from an elite line of criminal profilers known as "Grimms," he increasingly finds his responsibilities as a detective at odds with his new responsibilities as a Grimm.

A woman is abducted by a sinister stranger on Halloween night for a fate worse than death.