HE-MAN,

legendary defender of the planet Eternia,
has been summoned to the future world of Primus
to defend the planet from the evil Mutants of the neighboring world of Denebria.
But his old adversary, Skeletor, has followed him,
and allied himself with the Mutants in his fight to conquer the whole universe.

Together with a team of Galactic Guardians,
He-Man fights to defend Primus and all its power resources from the continuous
attacks by Skeletor and the Mutants.