Skeletor discovers that Eternia's sun is being eclipsed by both their lesser moon and greater moon. When this happens, the power to rule Eternia will flow into whomever controls the palace. He creates an earthquake to reach the palace undetected by way of a huge gorge. Adam falls in, losing his Power Sword in the process, and is captured by the forces of evil, who gain control of the palace. Orko is sent to find He-Man, who is their only hope of defeating Skeletor. Orko frees Adam, returns his sword to him, and He-Man goes back to lead the heroes to victory. Skeletor uses dark magic to take him back to Snake Mountain, and the power to rule Eternia flows into King Randor.