Noble Imposter (The Cantral Chronicles)

With microchips implanted in their skulls at birth, the slaves of Cantral and Cillineese have labored under the tyrannical rule of the nobles and their computers for decades. Monica, a noble who avoided the implanting and escaped a death sentence at the age of four, is now sixteen. She has risked life and limb to free the inhabitants of Cillineese, but the computers still rule the rest of the world.