In the fog-shrouded, steam-powered metropolis of Aethelburg, a city run on the predictable logic of brass gears and pistons, Julian Locke is a quiet genius. By day, he runs his family's esteemed automata shop in the respectable district of Rosefen Row, known for his almost supernatural ability to repair and improve any mechanical device. But Julian holds two secrets that set him apart from his era: he is a reincarnated engineer from a distant, hyper-advanced future, and he uses this knowledge to walk the city's darkest alleys as The Veilwalker, a mythic vigilante who delivers a brutal justice that the law cannot.