"Jon Kent--the son of Superman and Lois Lane--has returned from the stars along with his grandfather Jor-El. But a new costume isn't all that's changed about Superboy, and the Man of Steel's world may never be the same after SUPERMAN: THE UNITY SAGA: THE HOUSE OF EL! Superboy has unexpected revelations for his parents about what he's learned from Jor-El during their time away. Encounters with intergalactic bounty hunter Lobo, the other-earthly Crime Syndicate and even the Green Lantern Corps are just part of what Jon has dealt with. Now Superman must get personally involved in the outer-space war his son and father may have caused! But what's the truth behind Jor-El's agenda? And how will Superman--with help from Supergirl and Krypto--respond to the threat of Rogol Zaar and General Zod?" -- Provided by publisher.