The nine realms are burning, even as the clouds and snows of the fimbulvinter intensify.
After breaching Asgard, the Jotnar Army is now fleeing north, into the deepening winter. For their crimes against the nine realms and for the murder of Baldur, Odin has decreed that Loki and the entire Jotnar race be exterminated. Thor and a reluctant Brunhilda lead the Aesir Army. Although she is a loyal valkyrie, she has seen too much to follow these orders blindly.
Meanwhile, strange creatures have appeared in the lupine vargr and reptilian lindworms, long thought extinct. They threaten the Human sanctuary of Hoddmimis Holt, whose residents must decide whether to hunker down or flee, hoping to find protection further south. Aric is further torn by his visions of Freya, who insists they must warn the Aesir of these monsters.
But there is more to these creatures than the Humans can fathom. The vargr Fenrir has returned, somehow alive and empowered. Decades before, Fenrir waged a campaign of terror against Jotunheim, leading to a chance encounter between Loki and his sister Jarnsaxa with Baldur, prince of Asgard.
The unlikely alliance between Jotnar and Aesir that began with so much promise now threatens to tear the world asunder.
HAMMERSTRIKE is the second book of the HAMMERFORGED trilogy—adapting and exploring the stories and characters of Norse mythology.