Books can be dangerous. Fitz believes he is guardian of one of the most dangerous of all - The Winchester Codex was responsible for wiping out the entire draconic race, of which he is one of the last vestiges. Caught in a trap from the deep time of history, the dragon had vowed to protect the book's author. Yet in the 21st century, what relevance does this ancient manuscript have? He hides the codex in his attic and tries to forget about it.
A surprise visit from a friend leads to one last quest, forcing them both to confront their past.
In Swansea, Fitz and his friend Perceval happen upon a temporarily homeless teenager who joins them on a walk around the coast of Wales to raise funds for charity and records everything on social media.
But not all their followers are benign. Someone wants the codex that has lain neglected in Fitz' attic for centuries and wants it badly. What started as a simple walk, ends with a journey into darkness and to the gates of death.