Lion-O frees the child Thundercats from Mumm-Ra's spell, and then confronts him to retrieve the fabled Book of Omens.
Did You Know?
When the Ancient Spirits of Evil speak to Mumm-Ra, he does not recognize their voices, though in both "The Doomgaze" and "Excalibur" he spoke with one of them so should have recognized at least two of the voices. See more
Oh, where are you, Thundercats? If ever we needed you, we need you now.