In a battle between Skeletor's army and He-Man's, Mer-Man causes an arm of water to emerge from the ocean and drag He-Man under. He then takes his sword and brings it to Skeletor, which Skeletor uses to open Grayskull's jawbridge and enter the castle. The heroes arrive later and believe it's hopeless without the sword, but Zodac appears and transports He-Man into Grayskull. Skeletor tricks He-Man and drops him into the dungeon, where Beast Man is waiting to attack him. He-Man hurls him through through the ceiling and rips a pillar from the floor to open a passage back up to the throne room, but at that same moment Skeletor is opening the Vault of Knowledge. He-Man arrives at that moment and stops Skeletor, but Skeletor disappears out of anger.