This is the Earth in the 30th Century.

A world of science and technology. 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 their world. A centuries-old evil that threatens to destroy their entire universe.

Herein lies the story of the Legion's greatest challenge, complete in one volume.