A catastrophe of cosmic proportions has occurred: An alien entity has extinguished the sun itself. How can even the combined power of Earth's mightiest heroes battle the inexorable cold that threatens to wipe out the entire planet?

Blasting through the Boom Tube from a futuristic paradise to a battlefield called Earth, the teenage adventurers known as the Forever People stand with the likes of Superman and Deadman between the diabolical Darkseid and the enslavement of a universe!