Screams surge along York's narrow Victorian streets as a runaway crackle-tram races toward disaster. Fearing an accident like the one that killed her parents, Brasswitch Wrench is forced to reveal her powers - a decision that will change her life forever. Recruited to the sinister department of Regulators who hunt down others like her, Wrench teams up with their maverick mechanical leader, Bot, as they are tasked with halting the rise of the aberration threat. Until today, being called Brasswitch would have got you killed. Now, it might save your life.