Artist CORY WALKER returns to the series he co-created! After escaping from a Viltrumite Prison, Nolan Grayson and Allen the Alien must use what they've learned to gather the powers of the universe and unite them against the Viltumites. It all starts here, folks! The Viltrumite War looms large on the horizon! PLUS: PART THREE OF A SPECIAL PRELUDE TO NEXT MONTH'S IMAGE UNITED BY ROBERT KIRKMAN & WHILCE PORTACIO!