Book 1 of 'The Chaos Engine' trilogy.
Returning from another dimension, the X-Men discover that Earth is now ruled by one of the most notorious tyrants the world has ever known - Doctor Doom. Far more disturbing than the police state in which they find themselves, however, is the fact that some of the world's greatest Super Heroes - including the X-Men's closest friends - have allied themselves with the legendary villain.
Searching for answers, hunted by old enemies and former allies, the mutant adventurers face their greatest challenge: deposing an armour-clad madman with an entire world against them. Standing between them and victory, though, is their deadliest enemy - the malevolent Magneto, who has his own plans for dominating the world . . .
