Fragments from a meteor which explodes in the Eternian night sky have strange effects on those who get too close to them. Man‑at‑Arms is the first to fall under the magic influence and grows into a giant evil version of himself. Other creatures under the control of Skeletor and his minions undergo similar transformations and fight the heroes. He‑Man and his friends try to locate the meteor pieces. With disappointing predictability the solution to the crisis is to smash the minerals. A blending of two creatures into one is a nice touch though, and the illustrations are good.