S1·E14 Dawn of Dragoon

Orko's magic pyramid inadvertently saves Dree Elle, a female Trollan (Orko's species), who was hiding from Dragoon, an evil fire-breathing half man, half dragon who is terrorising Orko's home word of Trolla. On hearing the threat to his world, where he is a great magician, Orko promptly returns with Dree Elle in the pyramid. Knowing that their friend will need some help, He-Man and Battle Cat get The Sorceress to open a portal to send them to Trolla to help their friend, and find themselves in Orko's bizarre, back-to-front world, where they must put an end to Dragoon's reign of terror before sundown, or the portal back to Eternia will close...