In a future where science has accelerated human evolution, humankind diverges into two separate species: a genetically enhanced "super race" and ordinary humans or Mongrels. Decades of discrimination lead to a brutal war that ends with the super race in full control; the Mongrels, defeated and subservient, secretly yearn for revenge. Both sides are aware, however, that a renewed struggle can ultimately have only one outcome: extinction.
Mark Henshaw is a Mongrel living in London. Arrested for an infraction, he's deported to a labor camp, where a dying inmate entrusts him with details of a plot to topple the regime. Now Mark has a choice: keep his life and rejoin the girl he loves ?? or carry out a plot that could ignite a hellish new war. And with rumors spreading that the government is planning genocide against the Mongrel population, he's running out of time to make up his mind...