Two orphans find themselves at the center of a dangerous conspiracy when a ruthless megalomaniac initiates a hunt to capture them. Molly and Oliver, raised in the harsh environment of a Victorian-inspired metropolis, discover that their origins are tied to ancient, hidden forces that threaten the stability of their world. As they navigate a landscape of industrial smog and political intrigue, they must evade shadowy agents and uncover the truth of their own identities. The narrative employs a third-person perspective to track the converging paths of these children and the power-hungry figures seeking to exploit their secrets.

This work is often categorized as a notable entry in the steampunk genre, drawing frequent comparisons to the works of Philip Pullman and Susanna Clarke. Readers typically highlight the density of the world-building and the imaginative integration of Victorian tropes with fantastical elements. The narrative is noted for its rapid pacing and the complexity of its industrial setting, which serves as a central character in its own right. While some observers point to the sheer volume of plot threads as a challenge, the consensus suggests that the book provides a robust and immersive experience for those interested in gaslamp fantasy.