X-Men: The Hidden Years

Recently, the alien Z'nox were on a course to attack Earth. While he faked his death, Professor X prepared a strategem that would defend our planet from these alien parasites... but his plan left the Z'nox intact to ravage other worlds. Now, Cyclops, Marvel Girl, and Beast assist the Fantastic Four in ending the menace the Z'nox pose to all inhabited planets in the universe.

Meanwhile, Iceman remains in the Savage Land, suffering from amnesia and in the company of one of the X-Men's deadliest foes... Karl Lykos, also known as Sauron!