Written by Dan Abnett. Art by Tom Derenick. Cover by Stjepan Sejic. The Flash, Zatanna and Cyborg find themselves in the Mecha Universe, on an Earth that is not their own, in a futuristic version of Metropolis. Just when things can’t get any stranger, a giant, serpent-like version of Doomsday threatens to level the city, and the only one who can stop him is…Mecha Superman!