Skeletor takes control of the cosmic comet and uses its evil to attack Castle Greyskull.
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Acting on orders from Skeletor, Evil Lyn infiltrates the palace and magically substitutes Beastman for the real king.
Orko accidentally sends Prince Adam's magic sword into the past. Meanwhile, Skeletor kidnaps Prince Adam and sets a trap for He-Man.
Skeletor uses a magic gem to banish He-Man's friend to another dimension. He proceeds to Greyskull intending to use it on He-Man and take control of the Castle.
In order to control the Universe's strongest metal, photanium, Skeletor enlists the help of a She Demon.
Teela embarks on a dangerous mission to learn the true story of her parents.
Evil-Lyn, in disguise as a citizen of Eternia, convinces a peasant to release the Creeping Horac. This ancient punishment covers the Palace, trapping the Royal family inside.
He-Man must journey back in time to stop Skeletor's plan to destroy Castle Grayskull.
Dragon Eggs are hatching all over Eternia...part of Skeletor's plan to take over Grayskull.
The Frial Ileena, wishing she were more like Teela, recieves a potion from Jarvan, the evil sorcerer, which temporily grants her wish...but there is a price to pay.
Next to He-Man's Sword of Power, the Sword of the Ancients is the most powerful weapen on Eternia. He-Man and Man at Arms must race against Demos and Tyrella to recover the ancient weapon from its hiding place deep beneath Snake Mountain.
Evil Lyn plunders a magic jewel mine, and gives Skeletor a special metal that makes him as powerful as He-Man.
Teela begs Man at Arms to let her accpompany him and He-Man on a dangerous mission. Man at Arms refuses, but Teela secretly follows, and ends up saving the day.
Skeletor brings to life an enormous stone statue, with which he plans to conquer Grayskull.
Beastman poses as a carnival master and abducts Cringer as part of an elaborate plan to lure He Man into a deadly trap at Snake Mountain.
Skeletor kidnaps Stratos and steals the Staff of Avion that he uses to free Molkron, an enormous monster imprisoned by the Elders eons ago.
Orko, in search of a playmate, unleashes a little demon from a book which grows into a giant monster which He Man must capture.
Skeletor calls back to life monstorous creatures lost eons ago in the Tar Swamp.
Skeletor wipes out He Man's memory and casts him away on a distant, alien planet.
Orko returns to his homeland of Trolla to rescue his people from a ghastly fate at the hands of the monster Dragoon.
Prince Adam's spoiled and unfriendly young cousin pays a visit to the Royal Palace, and causes nothing but trouble, culminating in his unwittingly helping Evil-Lyn obtain Man at Arms's Rock Softener, which she intends to use to soften the walls of Castle Grayskull.
Without the Singer of Tahryn, the monster Yog will awaken and destroy all Eternia...so Skeletor abducts the Singer.
Orko's Uncle Montork purses a villian from Trolla to Eternia.
Mallek, a young wizard, unwittingly sells his soul to a demon to win Teela.
An evil "Lord of Plants" causes Etheria's plants to come alive and grow dangerously out of control. Only the combined forces of He-Man and Skeletor can stop him.
Evil-Lyn abducts Mira, the daughter of the powerful sorcerer Kor. When Evil-Lyn tells Kor that it was He-Man who kidnapped his daughter, Kor puts He-Man against the Crimson Scourge.