Across the Multiverse, Kal-Els are being murdered, and Val-Zod, the Superman of Earth-2, believes only one man can help--Jon Kent, Kal-El's son! Jon must cross dimensions to face the super-killer, including a trip to an Earth he's never seen...the world of Injustice! A place where versions of his friends and loved ones are at war, and heroes fight each other for total control. Can a newly reunited Super Sons beat these insurmountable odds? And even if Jon Kent saves the Multiverse, will he have any chance of returning to his own Earth? Collects ADVENTURES OF SUPERMAN: JON KENT #1-6.