Skeletor discovers a pool of energy deep in Snake Mountain. Next to it is an inscription in the ancient Snake tongue, which Kobra Khan says is of the ancient Snake Man language, which even his own people cannot read anymore. Skeletor reads it magically, and discovers that the pool holds the secret of King Hiss. Skeletor, intrigued, energizes the pool with the Havok Staff. Hiss emerges (as a human).
He-Man, notified by the Sorceress of the prior events, flies to Snake Mt., but along the way discovers Hiss being attacked by Skeletor and Khan. He-Man defeats them suspiciously easily, only to find that Hiss is actually a Snake Man in disguise. Hiss hypnotizes He-Man with his eyes, and he awakens by the pool. Hiss recounts the story of the Snake Empire that reigned thousands of years prior, while Rattlor captures the Power Sword. Luckily, He-Man recaptures it, plugs the energy pool, and defeats Hiss.
0007-6200 1986, Series 5.
Originally packaged with King Hiss.