He-Man and the Masters of the Universe - Season 1 - Eps 12: Disappearing Act
After He-Man puts an end to their latest plot, Skeletor and Beast Man plan to get rid of him once and for all; with use of invisible helmets they sneak into the Royal Palace and kidnap Prince Adam, to use as bait to lure He-Man out into a trap. Unfortunately, one of Orko's magic spells has gone wrong, teleporting the Sword Of Power away into Eternia's distant past, leaving Adam unable to transform into He-Man. While the Sorceress sends Orko and Cringer back in time to try and retrieve the sword, she has a special assignment for Man-At-Arms to trick Skeletor into believing that He-Man is about when he is not...
About He-Man and the Masters of the Universe

Title: He-Man and the Masters of the Universe
First Air Date: 1983-09-05
Last Air Date: 1984-12-08
Status: Ended
Rating: 7.3/10 (from 367 votes)
Language: EN
Seasons: 3
Total Episodes: 130
Network: Syndication
Genres: Action & Adventure, Animation, Sci-Fi & Fantasy, Kids
Production Companies: Mattel, Filmation Associates
Synopsis
When Adam, Prince of the planet Eternia, raises his magic sword he transforms into He-Man (the most powerful man in the universe). With his allies and friends, he battles the evil Skeletor and his minions to protect the secrets of Castle Greyskull.
Cast

John Erwin
He-Man / Prince Adam / Ram Man / Beast Man / Whiplash / Webstor / Faker / Granamyr (voice)

Alan Oppenheimer
Skeletor / Battle Cat / Cringer / Man-at-Arms / Mer-Man / Buzz-Off (voice)

Linda Gary
Teela / Evil-Lyn / Queen Marlena / Sorceress of Castle Greyskull (voice)

Lou Scheimer
Orko / King Randor / Stratos / Mekaneck / Man-E-Faces (voice)

Erika Scheimer
Arcadian women (voice)