The discovery of a dying monk's secret forces the exiled Crowbone to confront his destiny as the rightful heir to the Norwegian throne. Orm Rurikson, known as Crowbone, must navigate a landscape of shifting loyalties and brutal conflict to claim his birthright. Opposing him is the formidable Gunnhild, the Witch Mother of Kings, whose reach and influence threaten to extinguish his claim before it begins. The narrative follows the Oathsworn as they traverse a hostile world, bound by ancient oaths and the necessity of survival against a relentless adversary.

The narrative structure suggests a focus on the brutal realities of Viking life, emphasizing the physical toll of the quest on the Oathsworn. The conflict between Crowbone and Gunnhild serves as the primary engine for the plot, driving the characters through a series of escalating confrontations. Readers familiar with the series will likely appreciate the continuation of the established tone, which balances historical detail with high-stakes action. The prose aims to immerse the reader in the harsh environment of the late 10th century, where every decision carries the weight of life and death.