Adam and Teela visit an ancient castle where an evil Lord and Lady once lived, practising black magic by absorbing energy from the trees, until the trees died and they began a centuries-long sleep in their coffins. As Adam and Teela ride some winged horses, Lady Valtera and Lord Tyran awake from their coffins. Lord Tyran's appearance has been greatly disfigured by his evil ways- so severely that Valtera does not recognise him. When Valtera comes across Adam and captures him to be her slave, Tyran thinks she is more interested in Adam than him and wreaks havoc attempting to gain all the power he can, and capturing Teela along the way.

Clawful and Trap Jaw have stolen ‘the Horn Of Evil' from Trolla and returned with it to Eternia, so Dree Elle, with her mischievous younger brother Yuckers, heads to Eternia to warn Orko and his friends of the imminent danger. The evil duo intend to use the horn's black magic on Castle Grayskull, but thats just half of the trouble in store, as Yucker's love of practical jokes not only causes irritation for Orko and Dree Elle, but also puts them in great danger...

In the village of Chander, Trap Jaw and Beast Man break into the Shrine of the Gryphon to steal the Gryphon jewel, and place it in the grounds of the Royal Palace. Myth says that 200 years ago, the Gryphon – a giant fire-breathing dragon with a lion's head – entrusted the people of Chander to guard the jewel, and will return to cause destruction if anything happens to it. The evil duo plan for the Gryphon to attack the Royal Palace, but a young paige called Thad, who is upset that no-one ever seems to notice him, discovers the hidden gem. Feeling that it makes him someone important, he refuses to part with it, and soon, the Gryphon is wrecking destruction in search of the missing jewel...

Granamyr summons He-Man to Darksmoke, and He-Man follows his call accompanied by Man-At-Arms, who wishes to thank Granamyr for helping save his life (in "The Dragon's Gift"). Granamyr explains that a young dragon called Torm has fallen in love with a human princess, Lyra, and wants to become human in order to marry her. But Lyra's father, Brindle, will only allow any man to marry her if he passes a series of tests. Only a human can take these tests, and Granamyr wants He-Man to take them on behalf of Torm. He-Man agrees, but as he undertakes the tests he faces danger from an evil sorcerer called Zim, who wants to marry Lyra himself.

A spacefaring gladiator called the Game Master lands on Eternia, intending to capture He-Man to make him fight for his amusement. But when he sends his minions out to find He-Man, he is in the form of Adam and so He-Man is nowhere to be found. So instead they capture Teela- but they also take Adam's Power Sword, meaning he is faced with the task of rescuing Teela as Adam!

Baron Grod, an intrepid huntsman who kills animals in order to stuff them, is after the last living unicorn on Eternia. Prince Adam and Teela must set out to save the unicorn and put an end to Grod's doings.

Man-At-Arms' mentor, Rohad, who taught him all his scientific skills, is dying and He-Man must set out to find the only cure, a rare plant. Will he overcome the many obstacles in his way in time to save Rohad?

On the remote island of Selkie, the royal Historian, Hovar, is on a mission to investigate the ancient ruins of the island. However, his task is threatened by the many dangerous wild beasts of the island, and he is running out of ammunition to keep them away. Man-At-Arms has invented a sonic device called the VHO (Variable High-frequency Oscillator) which can emit high pitched sounds that will drive animals away. Adam and Teela set sail to Selkie Island with the VHO- but on the way, their ship is attacked by Merman, who sets the mighty sea demon called the Kraken on them... captures Teela, and steals the VHO! Adam transforms into He-Man, but can he save Teela from Merman's clutches, and recover the VHO and get it to Selkie Island, before Hovar's time runs out?

The Sorceress sends He-Man to the Sands of Time, to investigate the mystery surrounding a pyramid which appeared out of nowhere, then vanished as mysteriously as it appeared. When he reaches the desert, accompanied by Ram Man and Orko, He-Man comes across a villain called Lord Masque, who is causing havoc in the desert whilst intending to uncover the house of his 'mistress'. He-Man consults the Royal Archaeologist, Melaktha, who tells him that there was once a dark fortress in the desert which was home to the evil Goddess Shokoti. Suspecting this is the fortress that Masque intends to uncover, Melaktha and his young assistant Stanlin accompany the heroes to the desert to investigate Masque's scheme further.

While enjoying a lazy break fishing, Adam and Cringer see a young boy about to be eaten by a man-eating plant, and come to the rescue as He-Man and Battle Cat. Afterwards, Adam and Teela recognise the boy as their childhood friend David of Athra – only whereas they've grown, David looks the same as he did then! The Sorceress tells Adam that David's evil uncle, magician Count Marzo, cast a spell to transform him back to a child and wipe his memory. The only hope of restoring David to his proper self is to find the Ring of Remembrance, which is located in the Lake of the Lost. But, while He-Man, Teela and Battle Cat search for it, Count Marzo soon captures David back, and intends to use his magic powers to ensure He-Man and co. can never stop him...

The Sorceress summons He-Man to Castle Grayskull, which appears to be being haunted, the jaw bridge smashing repeatedly against the edge of the abyss, and the eyes flashing! Inside it is even weirder, full of grotesque holographic images of demons! The Sorceress has no idea what is going on, and Orko suggests that someone from the spirit dimension may be trying to contact The Sorceress. Using the window of the ancients, The Sorceress manages to trace the source of the haunting- the spirit of a magician called Zanthor, who was formerly a member of the Council of the Wise, but was exiled into the spirit world when he sold the Golden Disks of Knowledge to Skeletor, giving him the knowledge he needed to enter Eternia and build Snake Mountain. Zanthor wishes to amend for his crime by helping He-Man get the Disks back. So The Sorceress summons Zodac- the only remaining member of the Council of the Wise- and Zodac grants Zanthor temporary entrance into Eternia, though he must remain in spirit form until he can prove he is sincere. Zanthor then accompanies He-Man, Battle Cat and Orko to Snake Mountain, to find where Skeletor is keeping the Golden Disks of Knowledge.

Adam, Man-At-Arms and Orko are searching the forest for Salkweed needed for Man-At-Arms' experiments. But a storm strikes and Orko finds himself separated from his friends, and runs into a the clutches of a giant. He faints from shock, but awakens to find the giant has returned him to his friends- and not only that, but the giant has also delivered them a supply of Salkweed! The giant moves on before the heroes can ask him who he is and how he knew what they were looking for- but before long, both Orko and the giant are captured by the owner of a travelling Freak Show, who is making easy money by capturing human and animal oddities and displaying them as freaks. As He-Man sets out to rescue them, the giant begins plotting an escape plan, surprising Orko with his incredible intelligence, and friendliness in spite of his appearance.

Beast Man and Trap Jaw go into business for themselves, having stolen the Amber Crystal of Milaka. They use the Crystal to capture Orko and hold him to ransom, for all the Photanium in Eternia. As He-Man and Man-At-Arms set about looking for a way to rescue Orko without meeting the ransom demand, the imprisoned Orko uses his magic to the effect that Beast Man and Trap Jaw wish they'd never captured him in the first place...

The residents of the small village of Ruckstown are living in permanent fear of a monster they call 'The Tingler' that is said to live on Mount Fear, which overlooks the village. In the hope of hunting down and catching the Tingler, they call Prince Adam and Teela to their aid. Orko and Cringer accompany them, but soon they find themselves captured by the Tingler himself and taken to his home... but once they've got to know him, they find that The Tingler isn't as bad as the locals think...

Skeletor and Evil-Lyn send a disguised Kobra Khan to Palace Eternia to disrupt the Eternia Day Celebration. But knowing Orko's magic will see through Khan's disguise, Evil-Lyn uses her magic to erase Orko's entirely. He-Man and Orko set out to recover Orko's missing magic, but the only way they can do it is by finding the Magic Falls- can they reach them in time?

Mekaneck explains that he was given his bionic neck by Man-At-Arms after his neck was badly injured in severe storm winds. In the storm, he lost track of his son, Philip, and pledged his services to King Randor and the Royal guard in the hope of some day finding his son. It is revealed that his son was recovered from the storm winds by the evil Count Marzo, who had held him captive ever since and offers his return in exchange for the throne of Eternia. Buzz-Off appears. Teela tells viewers to be careful when running or climbing, and that it's more important to get somewhere at all than get there fast.

A boy called Tharen is jealous of his girlfriend Careel's admiration for He-Man, so he tricks her into thinking he is He-Man's secret identity in the hope that she'll like him better. Meanwhile, at Eternos jail, a criminal scientist caled Galen Nycroft has managed to teleport to his cell a strange machine to increase his power. The machine transforms him into Modulok, and he escapes from jail and sets out to capture He-Man, in the hope of convincing Skeletor to recruit him. He overhears Tharen telling Careel that he is He-Man, and captures him, thinking he is He-Man's alter ego! Can the real He-Man rescue Tharen... and will his real secret identity be threatened in the process?

A villain called the Toy Maker offers his services to Skeletor, saying he creates toys which appear harmless at first, but are capable of growing to giant size and obeying his every command. Between them, the Toy Maker and Skeletor devise a plot. The Toy Maker sells his toys to Orko, then when Orko takes them back to the palace, the toys grow to giant size and capture Man-At-Arms. He-Man and his friends set out to rescue Man-At-Arms, while Skeletor plots to use the toys to capture He-Man as well.

An evil king from the Dimension of Evil has kidnapped a good wizard. In order to get his freedom back, his daughter makes a bargain that she will kidnap the Star Child so that the evil king can look upon her. However, she soon finds out that she's bee duped when the evil king breaks his bargain and transports her, the Star Child and the heroes (along with the Star Child's body guard) to his dimension, hoping to force the Star Child to use her powers to open a gate to Eternia for himself and his forces to come through and take over.

Remembering the failure of his last attempt to control The Cosmic Comet, Skeletor decides he can only control the comets if he controls Zagraz, the comet keeper. He sends Two Bad out to capture Zagraz, and with the comet keeper in his clutches, Skeletor sets out using the comets to attack the Royal Palace and Castle Grayskull.

Prince Adam, Melaktha and Moss Man set sail on an archaeological expedition to the lost island continent of Avathar. When exploring the ancient ruins of the island they come across its legendary mirror, which holds all the greatest knowledge within its glass. They load the mirror onto the ship for their return journey, but its safety is threatened by a disguised Trap Jaw spying on them, and a storm at sea.

An alien race called the Vendari, which knows no evil, visits Eternia, wishing to see the difference between good and evil for themselves, and which side is stronger. They select Fisto from the side of good and Spikor from the side of evil, to compete against one another in a series of games. However, Fisto's chances of victory are threatened by Skeletor and his crew, who refuse to play fair and do all they can to ensure Spikor emerges victorious.

There is a bit party at the palace and everyone is invited, except for Skeletor and co. They go to the forest and capture animals which they let loose at the party so He-Man has to intervene to save the day.

After Queen Marlena, using Man-At-Arm's new 'mind projector', relives how she came to crash-land on Eternia years before, Teela tries to use the device to learn who her mother is, but is frustrated when it is unable to display the image. She decides to head to the Crysal Sea, in search of the legendary Oracle, the only thing on Eternia that could possibly tell her of her true parents. But Mer-Man, defeated years before by Man-At-Arms, is looking to get even, and plans to use Teela as a sacrifice to a sea God...

Skeletor devises a cunning scheme to capture Queen Marlena and lead He-Man to his robot bird Screeech, and he sends Whiplash, Merman, Clawful and Kobra Khan to carry it out. Kobra Khan kidnaps Marlena after overpowering the Royal Family with his sleep gas, then he and Merman take her through the Haunted Forest back to Snake Mountain. Whiplash and Clawful, meanwhile, create visible tracks in the ground in the opposite direction. When the Royal Family awake, He-Man, Man-At-Arms and Teela follow Whiplash and Clawful's false trail, which will only lead them to Screech. But Cringer's sense of smell detects that Marlena was taken towards the Haunted Forest, and so he and Orko set out to follow the correct trail. Encountering many dangers along the way, this is Cringer's big chance to prove he's no Fraidy Cat!