KILLER DRONES ATTACK!Terrifying drones controlled by artificial intelligence are destroying London . . .Genius scientist John Strider helped create the machines - and he's disappeared. Only one person has a chance to stop them - his teenage son, hotshot pilot Hal Strider. Hal and his sister Jess are determined to prove their father's innocence, and to find a way to save the city. But in order to survive, they are going to have to take on a terrible and remorseless foe.THE MACHINES ARE COMING . . .

Hal Strider's father worked for a technology company that's developing drones for the military. But when Hal's father vanishes in mysterious circumstances, the drones' programming breaks down, and they start to target ordinary people of London. Hal and his sister, Jess, have to escape London, find their dad, and stop the drones.