The thunder god Thor faces a war that threatens to consume Asgard itself. Thor must confront the fiery lord Surtur in his own realm, a conflict that could spell the end of the legendary realm of the gods. This epic saga introduces new threats like the cunning Malekith and a hero worthy of Mjolnir in Beta Ray Bill, all rendered with Walter Simonson's majestic art and narrative. The story unfolds across the fiery pits of Surtur's domain and the cosmic landscapes of Asgard, pushing Thor to his limits.

Walter Simonson's tenure on Thor is widely regarded as a high point for the character, celebrated for its epic scope, powerful artwork, and compelling storytelling. This collection marks the beginning of that legendary run, reprinting issues that introduced iconic elements and revitalized the thunder god's mythology. Readers and critics alike often praise Simonson's ability to blend cosmic fantasy with deeply personal stakes, creating a narrative that stands alongside the original Lee-Kirby masterpieces. The introduction of characters like Beta Ray Bill and the confrontation with Surtur are frequently cited as highlights of this era.