Ichabod Crane and Lt. Abbie Mills concoct a daring plan to try to rescue Ichabod's wife, Katrina, from the Headless Horseman by resurrecting a Frankenstein-like monster created by Benjamin Franklin. Meanwhile, Frank Irving faces new trouble after revealing the true details of his encounter with a demon, and Jenny Mills finds herself at odds with the new sheriff in town.

Abbie and Crane's search for a missing Sleepy Hollow child reveals a creature akin to the Pied Piper, whose legacy with the child's family extends back to a centuries-old curse.