Does this need explanation? Castle Grayskull is essentially the center of the power of the universe. It is the home of the Sorceress and the vault of innumerable secrets which could provide any evil would-be conqueror with the means to rule the entire planet. Why wouldn't there be an epic battle as Skeletor and his minions attempt to overthrow the Sorceress and breach it's giant stone walls? So many great MOTU illustrations depict a version of such a battle and they tend to spike the adrenaline levels of every good He-Man junkie. If ever there were an act III for a Masters movie, this is it. Depending on the script, this could be a good time to throw in that He-Man ass beating mentioned earlier. The right decision: A battered Skeletor falls while reaching for the gate of Grayskull. The wrong decision: Grayskull plays a passive role as being merely the Sorceress' digs.