Fifty years ago, the world was almost destroyed by a chemical war. Now the world is divided: the mutants and the pure, the broken and the privileged, the damaged and the perfect. Thirteen years ago, a covert government experimental facility was shut down and its residents killed. The secrets it held died with them. But five extraordinary kids survived. Today four teenagers are about to discover that their mutant blood brings with it special powers. Rush and three brothers and sisters he can’t remember. Two rival factions are chasing them. One by one, they face the enemy. Together, they might just stay alive . . . At first glance, the inhabitants of City Four all appear perfect. Science has helped to make them that way. All disease, sickness and the genetic differences that exist in humans have been removed. Parents can choose exactly what their children will look like, everything down to the colour of their eyes and their hair. Nothing is left to chance. The only fly in the ointment of this, otherwise perfect, existence is the groups of individuals who live outside the city walls. The other survivors of the last war, the mutants (mutes) exist in the slums...