Set in an alternate 1880s Seattle, the novel unfolds in a world where a devastating mining invention has unleashed a toxic gas, turning many of the living into ravenous undead creatures. Amidst this chaos, a determined mother ventures into the walled-off, zombie-infested city to clear her husband's name from the creation of the catastrophic machine and to rescue her son, who has ventured into the dangerous quarantined zone. As she navigates the steampunk dystopia filled with airships, pirates, and a relentless will to survive, she uncovers dark secrets and faces the horrors that have taken over the once-thriving city.

This novel is a thrilling entry in a popular urban fantasy series, blending action, humor, and supernatural elements. It follows the story of a Marine veteran who, after a life-altering encounter with a supernatural entity, joins a secretive organization dedicated to hunting and neutralizing monsters that threaten humanity. Set in the 1990s, the protagonist navigates the challenges of adapting to civilian life, the complexities of working within a team of unique and skilled individuals, and the dangers posed by a variety of monstrous foes. The narrative is rich with detailed world-building, intense combat sequences, and a deep exploration of the characters' backgrounds and motivations, making it a compelling read for fans of action-packed fantasy adventures.