Original Airdate: ?/?/1985
Shadow Weaver, Catra, and an army of Horde Troopers have the rebels Bow, Kowl, and Adora pinned down in a canyon. Adora braves a gauntlet of fire, in order to find cover and transform. She-Ra emerges from another end of the cave, and is able to shield the rebels from Shadow Weaver's magic blasts. Shadow Weaver and Catra return to the Fright Zone in defeat, and Hordak summarily dismisses their abilities, heavily rebuking Shadow Weaver's magic. Spurned, Shadow Weaver seeks out an ally who can help her demonstrate her value.
She contacts Skeletor at Snake Mountain on Eternia, and proposes an alliance in order to trap Hordak. Shadow Weaver plans to take control of Etheria once they unseat Hordak, and in return, Shadow Weaver will provide Skeletor all the assistance he needs to help overthrow King Randor and seize control of Eternia. Skeletor accepts, but secretly plans a double cross. Light Hope summons She-Ra to the Crystal Castle, having sensed the dimensional gate that Shadow Weaver used to bring Skeletor to Eternia, and informs her of their alliance.
Meanwhile, Shadow Weaver and Skeletor arrive at Snake Tongue Pass, where Hordak's tanks and army are passing through. Together, they manage to collapses the pass around the Horde, but Hordak is able to drill out from beneath the wreckage of the vehicle. Hordak and Skeletor face off in battle, and while the fight seems pretty even, Skeletor is able to gain the upper hand and use sleep mist to knock Hordak unconscious. At that moment, She-Ra arrives to confront Skeletor, Skeletor proceeding to warn her against interfering.
Shadow Weaver uses her shadow coils to ensnare She-Ra, and Skeletor uses the sleep mist on her as well. Swift Wind escapes, and flies back to the Whispering Woods to get help. Skeletor traps Hordak in a magic cage, and is also able to trick Shadow Weaver into entering the cage, trapping her as well. Skeletor buries the cage beneath rock and stone in the pass, and proceeds to seize the Fright Zone, carrying She-Ra in tow within a magic force field bubble. Back at Snake Tongue Pass Shadow Weaver tries to escape the cage, but her magic is insufficient. Hordak awakens, completely unaware of Shadow Weaver's betrayal.
The pair decide to join their powers; Shadow Weaver's magic coupled with Hordak's technological buzzsaw permits them freedom from the cage. Bow and the rebels arrive at the Fright Zone and free She-Ra from the force field, confronting Horde Troopers as they make their escape. She-Ra battles Skeletor and jumps on a laser beam platform, sending Skeletor through the air and into the moat surrounding the Fright Zone, where Hordak and Shadow Weaver confront him. Before Skeletor can reveal Shadow Weaver's betrayal, she banishes him back to Eternia, and Hordak is able to reassert control over the Horde.
Synopsis by Michael Cravens