When Prince Adam gets his hands on the Zwaard der Macht again after 15 years, it leads him back to his home world, Eternia. Once there, he discovers that Eternia is suffering under the cruel rule of Skeletor. To save his family and his world, Adam must work with his loyal allies Teela and Man-At-Arms Duncan, and he will have to fulfill his calling as He-Man, the most powerful man in the universe.