In a desperate effort to stop the return of the Snake Men, The Masters of the Universe seek out the aid of the Evil Warriors. But Skeletor looks to capture the heroes when they arrive. As the forces of good and evil battle, Kobra Khan and Rattlor make their way to the Void within Snake Mountain, freeing their ancestral allies, Tung Lashor, Sssqueeze, Snake Face, and the Snake Men leader, King Hssss!