Sins of Youth part 5 of 12. The ramifications of our heroes' transformations continue to build as a now-young JLA finds itself confused with Young Justice and wanted for YJ's crimes! What's worse, their youth isn't limited to their appearances, the team's maturity level has also decreased! Can Kid Captain Marvel, the World's Mightiest Mortal, help the World's Rowdiest Teenagers with a magical trip to the Rock of Eternity, or is the JLA Jr. doomed to live a painful adolescence? Meanwhile, Klarion completes his own mission: finding Amazo, the android with all the powers of the JLA!