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! This expanded deluxe edition collects LEGION OF SUPER-HEROES #284-296 and LEGION OF SUPER-HEROES ANNUAL #1, and a gatefold character guide featuring the Legion, their allies, and their enemies!