He-Man/ThunderCats

Plot

After another defeat by Lion-O, Mumm-Ra returns to his Black Pyramid to restore himself. The Ancient Spirits of Evil tell him they have found a weapon to defeat the Thundercats: the Power Sword of He-Man. On Eternia, Prince Adam wakes with a start and rushes to a ceremony in his honor, where King Randor and assembled heroes have waited over half an hour. Randor berates Adam for not being ready for royal duties. An earthquake shakes the city, and all see Third Earth, home of the Thundercats, tearing through space into orbit above Eternia. On Third Earth, the Thundercats are startled by the earthquakes and the appearance of Eternia. Jaga appears in ghost form and tells them about Eternia, fearing both worlds will live or die together. Lion-O raises the Sword of Omens for sight beyond sight to see the danger. On Eternia, the presence of Third Earth causes massive earthquakes, and heroes rush to defend the population. A tidal wave swamps the city, throwing Adam, Randor, and Cringer over a balcony into the waters. Adam saves the unconscious Randor and pulls them to higher ground. As Adam raises the Sword of Power to become He-Man, the Sorceress of Grayskull arrives to stop him, saying an evil has come for the sword and she will secure it in Castle Grayskull. When Adam hands over the sword, the Sorceress stabs him through the chest, revealing herself to be Mumm-Ra in disguise. On Third Earth, after confirming their allies are safe, the Thundercats prepare to head to Eternia. Lion-O speaks his fears to Panthro, wondering if he is up to the task. Panthro encourages him, saying both the Sword of Omens and the Thundercats have faith in him. Lion-O thanks Panthro as they head to the ship bound for Eternia.