Original Airdate: ?/?/1984
When Ram Man mistakes Man-E-Faces for a monster the two part ways not speaking. Beast Man, on a mission to Eternia's Dark Moon, crashlands the Doom Buster at the Royal Palace, where the heroes take over and fly the Doom Buster to its programmed location. They arrive near the Dark Moon and allow Man-E-Faces to finish the journey while the others take a shuttle to the Bright Moon.
Professor Orion explains that the once-friendly people of the Dark Moon have turned against them. King Barbo, ruler of the Dark Moon, rejects the moons' treaty after several "incidents" of disaster have occurred to his people. Man-E-Faces disguises himself and arrives on the Dark Moon, where Evil-Lyn, Trap Jaw, Whiplash, and Mer-Man greet him. They explain that they caused the "incidents" on the Dark Moon. The real Beast Man escapes from Eternia's jail and alerts Skeletor. When Skeletor confronts Man-E-Faces, He-Man disrupts the villains' plans.
Man-E-Faces makes up with Ram Man. Skeletor and Trap Jaw try to use the Photon Blaster against the Solar Moon Project, the Bright Moon's great endeavor to provide light to the Dark Moon. He-Man stops them and destroys the Photon Blaster before they get chance, allowing the moons to rejoin in a new treaty.
Synopsis by Zadoc Angell