Following a botched job that killed his apprentice, Garrett wakes up to find the City he thought he knew changed, and not for the better. The mysterious Gloom sickness plagues an already diseased and contentious population. Into this volatile mix appears a man claiming to have a cure for both the Gloom and the Baron's iron rule. Orion, voice of the people, hires Garrett to find a book he claims is the key to saving the City from the Gloom. Garrett soon finds that things are not as they appear and he's more wrapped up in events than he ever believed possible.