Original Airdate: ?/?/1984
All the books on Eternia have disappeared, so the Heroic Warriors investigate the situation. Teela and Orko follow a trail of books to the Temple of The Sun, where they encounter Batros, the winged villain from the dark side of Eternia, who steals books because he knows that knowledge is the most valuable power of all. Skeletor sends Beast Man and Trap Jaw to capture Batros so he can combine forces with such an impressive intellectual.
Batros agrees to go with Beast Man because he wants to join Skeletor. The Sorceress sends He-Man and Battle Cat to the Temple of The Sun, but they go to Grayskull when Man-At-Arms informs them that Skeletor and Batros are planning an assault on the castle. Batros produces a bridge of hardened snakes to cross the moat, but He-Man stops him. After Skeletor vanishes, Batros drops He-Man into the abyss, but he climbs back to the top and throws Batros back to the dark side of Eternia.
He-Man discovers that all the books have been moved from the Temple of The Sun and decides to confront Skeletor at Snake Mountain. Thinking he has He-Man and Battle Cat trapped, Skeletor reveals he hidden the books beneath the mountain. He-Man breaks free and returns the books to the Royal Palace, where the Royal Family celebrates Prince Adam's birthday.
Synopsis by Zadoc Angell