Action Comics (1938-2011) #846 (NOOK Comic with Zoom View)

General Zod, Ursa, and Non attack Superman in Metropolis as the history of the Phantom Zone is revealed and the identities of the super-boy's parents are uncovered! And if you thought three Kryptonian villains were tough, wait until you see what damage an army of them can do! Continued in ACTION COMICS #851!