Book 1: ALIENS AND AVENGERS FACE OFF! It's all led to this: Xenomorphs reach Earth! The perfect organism meets a planet of superhumans. Who will be first to fall? Legendary collaborators Jonathan Hickman and Esad Ribi? cut loose in this four-part epic unmissable for Marvel and Alien fans alike!

Book 2: EARTH SURRENDERS?! Overwhelmed by Xenomorphs, the survivors abandon their home planet! But so many are dead. So many wounded. And a terrifying few...CHANGED. The Avengers...must avenge.

Book 3: THE ENGINEERS GO TO WAR! But in a world of cosmic heroes and genetic mutants, the Engineers are not the only gods of creation. As the Engineers set out to destroy what they made, humanity's remaining heroes discover an even more pressing threat: the X-Men.

Book 4: FINALE! THE SINISTER PLOT REVEALED! Earth's mightiest heroes abandoned their home planet to save humanity from the Xenomorph threat. Now, they've arrived on Mars - current refuge of the X-Men. But the twisted machinations of Mister Sinister might spell doom for them all... Don't miss the EPIC CONCLUSION of Hickman and Ribic's CROSSOVER MASTERPIECE!