Long live the Legion! Inspired by the acts of and lessons learned from the greatest heroes of all time* the Legion of Super-Heroes have gathered together to stop a galaxy from repeating its past mistakes. Why have the Legion of Super-Heroes broken the cardinal rule of the United Planets and inducted Jon Kent* a.k.a. Superboy* into the Legion? What are they hiding? And what does it have to do with Aquaman's long-lost trident? But first* take a trip through a thousand years of DC's future history navigated by a mysterious figure from the present! The greatest lineup of heroes in comic book history returns with new* fresh stories! Collects Legion of Super-Heroes: Millennium #1-2 and Legion of Super-Heroes #1-6.