Justice League Vs. The Legion of Super-HeroesThe greatest heroes of two eras face their biggest threat each other! Its the 21st century versus the 31st century, with all of reality at stake! One thousand years in the future, a Legion of Super Heroes comes together to dedicate their lives to recapturing the great age of heroes of the 21st century. When the heroes discover that reality is falling to a great darkness in both times simultaneously, the Justice League and the Legion of Super Heroes