The Justice League disbanded when their last mission went terribly wrong, and Martian Manhunter paid the ultimate price. But the team learns that time is a circle, and their last mission on Apokolips holds more than just the key to protecting a war criminal and completing their mission, it tells the story of how we lost J’onn…and why Superman holds Batman responsible!
J'onn's sacrifice was well done by Zdarsky. It will be interesting to see how the rest of this run plays out with the big bads introduced in this issue.