Art by Keith Giffen, Pat Broderick, Curt Swan, and Others This is Earth in the 30th Century. A world of peace and light. Preserving this peace is the Legion of Super-Heroes, a group of young adventurers who are the best and brightest of their kind. But a darkness is approaching; a centuries-old evil that threatens to destroy their entire universe. Herein lies the story of the Legion's greatest challenge! Collects LEGION OF SUPER-HEROES #287, #290-294, and LEGION OF SUPER-HEROES ANNUAL #3.