He-Man and the Masters of the Universe - Season 2 (2003)

In a desperate effort to stop the return of the Snake Men, The Masters of the Universe seek out the aid of the Evil Warriors. But Skeletor looks to capture the heroes when they arrive.

Having overthrown Snake Mountain, the Snake Men seek the power of the Elders. After allying herself with King Hssss, Evil-Lyn informs him of the power within the walls of Castle Grayskull.

Having been revealed as a traitor, Evil-Lyn is being pursued by Skeletor and the Evil Warriors!

Queen Marlena's aircraft loses power and crashes over the Corridors of Lithos, as power outages wreck wreak havoc across the planet.

Learning from Lord Dactys that King Hssss and his Snake Men are still alive, The Masters of the Universe track the Snake Men, attempting to retrieve the Serpent's Ring from the Sea of Rakash.

Adam has a dream in which he sees a warrior similar to He-Man fighting both the Snake Men and Hordak. The dream prompts him to journey to Castle Grayskull in order to seek answers to the many questions that have arisen from the dream.

Having driven the Snake Men away from the Mystic Mountains, the Masters enter a local tavern where Man-At-Arms confronts his brother, Fisto, whom he accuses of being a deserter during the Great Unrest.

The Masters are called to Spelea, where they discover Lord Dactys and his warriors defending themselves from a Caligar attack.

As the Snake Men prepare to awaken Serpos, Evil-Lyn allies herself with Count Marzo and heads towards the Well of Darkness to free Hordak from Despondos!

Using the power of the Medallion of Serpos, King Hssss transforms Snake Mountain into the mighty snake god, Serpos! Serpos begins to cause great destruction on Eternia, viciously attacking the Royal Palace before heading to Castle Grayskull.