Superboy is stranded on the dark mirror world of Earth-33 without a way to get home, all at the mercy of his evil counterpart, Ultraboy! But as the Boy of Steel plans for his next confrontation with the Smallville scoundrel, it becomes increasingly obvious that Ultraboy has brought him to his world for a reason. Could it be that Superboy has to train a group of would-be super-heroes in order to simply give Ultraboy a challenge on this topsy-turvy world where evil always triumphs over good? And will Alex Luthor of that world finally become the hero he was always meant to be? Guest starring the Earth-33 counterparts of several heroes and villains of Earth-One!
The quest to rescue young Garridan Ranzz from a mysterious abductor leads the Legion of Super-Heroes into one of its most harrowing journeys yet. They find themselves in a darkened world where all they knew and loved has been corrupted, and only one of their most powerful foes could be responsible: the Time Trapper! But just who is the Time Trapper, and what are his motivations for targeting the Legion over the years? Guest starring Superboy!