The new epic chapter in the battle for Castle Grayskull!. The newly mechanized Skeletor, armed with the might of Motherboard, attacks the heart of Eternia while Prince Adam grapples with a new responsibility and what that means for him as He-Man!. Adam is forced to choose between the scepter or the sword, and a life as either the King or the Champion!. Meanwhile, the new Sorceress Teela searches for the secret of Snake Magic in the mists of Darksmoke to rebuild a magic realm and help He-Man hold off the greatest threat Eternia has ever faced: the return of the despot Hordak, the ruthless leader of the Horde Empire!.