New York Times best-selling writer Robert Venditti (SUPERMAN '78) joins forces with visionary artist Tomas Giorello (PLANET DEATH), industry powerhouse Trevor Hairsine (DCEASED), and a battalion of comic all-stars for a bone-crushing action blockbuster. The Tankers were sent back 65 million years into the past with a simple mission. To use their weaponized mech-suits to divert the asteroid that annihilated the dinosaurs and buy a little more time before extinction – and a lot more future oil reserves. But deep in Earth’s prehistoric past, something far deadlier than dinosaurs lies in wait. A species of star-faring, super-advanced ancient aliens! Battle-hardened by millennia of galaxy-spanning civil war, the ancient aliens have come to Earth armed to the teeth and ready to unleash the most fearsome arsenal unknown to man. Now the Tankers must wage an all-out war against ancient aliens and monstrous super-dinosaurs alike if they hope to fight their way back to a future worth saving!