Keeper of the Ancient Ruins

After receiving a distressing message from Professor Smallen and Man-At-Arms, Teela and Adam go to investigate. As they wait for help from their friends, the Zactons freeze Man-At-Arms in time with a ray, believing him to be a threat to both themselves and the Book of Ancient Eternia. Professor Smallen convinces the Zactons to free Man-At-Arms in order to repair a damaged member of their number, named Kappa. Together the two slowly teach the book's guardians about friendship and trust. Trap-Jaw arrives at the temple to steal the Book of Ancient Eternia, only to be met by Teela and Adam, who promptly transforms into He-Man to do battle with the villain. Initially distressed at the conflict taking place in their home, the Zacton's eventually realize that He-Man and his friends seek to protect and help them, soon helping the Heroic Warriors by trapping Trap-Jaw in a time ray as they had Man-At-Arms. The episode closes with Trap-Jaw being hauled away work in the prison mines, while the Zactons share a heartfelt goodbye with their newfound friends.

**He-Man:** "Today we saw Professor Smallen find a great treasure. It wasn't gold or jewels, but something even more precious... knowledge. There are many places to find knowledge, and one of the easiest and best is a museum. Museums are storehouses of knowledge where you can see and learn all sorts of fascinating things. There's probably one close to you, so pay a visit. Remember, knowledge is power. And you can get the power."

John Erwin as He-Man/Prince Adam, Professor Smallen and Alpha

Alan Oppenheimer as Man-At-Arms, Battle Cat/Cringer and Beta

Linda Gary as Teela and the Sorceress

Lou Scheimer (credited as Erik Gunden) as Orko, Trap Jaw, Kappa and Royal Guard

1. Behind the scenes: Script was approved May 16th 1983. This is the only time we see an off screen transformation of when Prince Adam becomes He-Man for example we only see the flashes and we do not see He-Man hold the sword to his chest when he says “I have the power!”
2. Continuity: Professor Smallen returns, albeit with a slightly altered color scheme in The Great Books Mystery. The animation of Man-At-Arms fixing one of the Zactons while the others look on would be reused, with a different background, in the moral segment for Teela's Trial. The opening movement of He-Man attempting to strike Trap Jaw are based on animation seen in Ordeal in the Darklands. The stormy background from this adventure will be seen again when Adam and Cringer approach Snake Mountin in their Wind Raider was first used in the episode Three on a Dare.

Source: heman.fandom.com (Wiki Grayskull, CC BY-SA 3.0). Catalogue and trivia compiled for heman.org.