First, it was Doctor Doom. Then, Magneto. Two men with a common dream: to become absolute master of the Earth. Through the use of the Cosmic Cube-a device whose reality-bending powers allow its possessor to create their own perfect world-they were each able to bring their dreams to life, if only for a short time. Fortunately, the X-Men were able to shatter those dreams before they destroyed the planet. But now the Cube has fallen into the hands of the infamous Red Skull, and unlike his villainous predecessors, the Skull is in complete control of the Chaos energies generated by the Cube! With time running out, the X-Men must make one final, desperate attempt to destroy this "Chaos Engine" and restore Order to the cosmos before their entire reality is wiped from existence by an all-powerful alien race!