At the Fright Zone, Shadow Weaver summons forth a group of Shadow Beasties to menace the rebels. Upon learning of their attack on the village of Thaymor, Bow warns She-Ra, just as Orko and Man-at-Arms step through a dimensional gate from Eternia. Man-at-Arms is delivering the electric force shields the rebels had requested, noting that Eternia will gladly aid the Great Rebellion in their battle against the Horde. As the Shadow Beasties attack the villagers, She-Ra, Bow, Glimmer, and Man-at-Arms use the force shields to draw their energy blasts, which sends the Shadow Beasties fleeing in defeat. Shadow Weaver is disappointed by the performance of her Shadow Beasties, and vows retaliation, suddenly appearing at the village of Thaymor. Upon her arrival, Orko taunts her, causing her to unleash her wrath by stealing Orko's shadow. By stealing the Trollan's shadow she weakens him, and his magic is diminished considerably. Shadow Weaver quickly vanishes with Orko's shadow.
At Horror Hall Shadow Weaver frightens the shadow with bright light, causing it to flee and elude her. She orders Grizzlor and Dylamug to recapture it, so that she can drain its magic and use it to empower her Shadow Beasties. As Orko continues to worsen, She-Ra contacts Light Hope using the sword of protection. Light Hope warns her that Shadow Weaver has retreated to her abode at Horror Hall, and that her power is at its strongest ebb there. He also tells her that while She-Ra can use her sword to transport them to Horror Hall, Orko must defeat Shadow Weaver and help them escape.
She-Ra calls upon the honor of Grayskull to open a magic gate to lead the rebels to Horror Hall. Upon arriving at Horror Hall they locate an entrance, first fighting evil monsters and then sparring with Mantenna, Leech, Grizzlor, Dylamug, and Rattlor. During the battle with the villains She-Ra is able to redirect Mantenna's freeze rays and quickly defeat his allies, as Orko is reunited with his shadow. At that moment, Shadow Weaver appears and attempts to prevent their escape. Orko uses his magic to gain control over Shadow Weaver's shadow, weakening her and sending her chasing after it, as the rebels, along with Orko and Man-at-Arms, escape.
Synopsis by by Michael Cravens