Schoolkids one moment, accused terrorists the next. When his mysterious uncle is murdered, 16-year-old Will Roberts and best friend Eliza are dragged into the machinations of a deranged mastermind bent on slaughter at an unfathomable scale. Hunted by authorities and killers alike, their only hope is to find out why someone was so desperate to have Will's uncle dead, if they are to save themselves and the city they call home. To do so, Will and Eliza must draw on every scrap of intelligence they have to stay alive and out of the clutches of the police and the gunsights of the fanatic's army of devotee killers. With the help of old friends and unexpected allies, they believe they can work out where the madman will strike. But, massively outgunned and with the police closing in, will their chase to save the city end up dooming them all?