A group of human engineers discovers that the universe is slowly collapsing, necessitating a desperate intervention to prevent total annihilation. Protagonists Gary Nelson and Herb Lee find themselves thrust into a conflict that spans dimensions and eons. They must navigate the complex physics of a dying cosmos while contending with the mysterious, god-like entities known as the Cosmic Engineers. The narrative unfolds through a fast-paced, serialized structure typical of the Golden Age of science fiction, emphasizing grand-scale problem solving and technological ingenuity.

Readers frequently highlight this work as a quintessential example of early space opera that prioritizes scale and imagination over character depth. Discussion often centers on the ambitious scope of the plot, which attempts to reconcile human engineering with the fundamental laws of physics. Critics note that the pacing reflects the constraints of its original magazine format, resulting in a dense, action-oriented narrative. The work remains a significant point of interest for those studying the evolution of science fiction tropes during the late 1930s.