In ghostly form, Skeletor reveals hidden secrets about Castle Grayskull as he summons his slithering armies to keep He-Man and crew away from its walls.

Krass questions her ties with Skeletor. Teela and Duncan reunite with Eldress in an icy tundra while He-Man and his dad battle forces in the forest.

Duncan, Teela and Eldress try to get their tech to work underwater to escape the Mer-Man. Evil-Lyn and her fellow fiends restore their dark powers.

The battle's on between the Masters and the Mer-Man. He-Man tries to get Krass back on his side and stop Skeletor's wicked plot to be reborn.

He-Man gets a tempting taste of Havoc and abandons King Randor and crew on the ice to go solo. Skeletor begins his evil magic.

With help from Teela, Ork-0 meets the one and only Orko the Great to find a spell that can remove Havoc from Adam. Evil-Lyn questions her motivations

Skeletor unveils the full extent of his Havoc-fueled plans to the people of Eternos. Desperate Teela offers an unlikely truce to strengthen their side.

With Eternia on the brink of destruction at Skeletor's hands, can He-Man and the Masters rally together to show who holds the ultimate power?