After an apocalyptic event, the survivors have formed into groups. These include the Travellers, who trade in small goods; the medievalists in the enclave Thorngard; the Tribe, a loose gathering of nomads; and in the city the Breakers, who destroy every machine they find, blaming the machines for the disaster. Sarah, a child of the Breakers, joins with the Travellers in an attempt to save the world from destruction.