An alien policeman comes to Earth to hunt down a renegade of his own race.

In the same vein as Cain and Abel, here we have two brothers, one a renegade cop and the other a murderer with a taste for little boys. The brothers come to blows, from which only one can walk away.

Roo Marcus has just spent 8 years in a mental institution, and takes up bare-knuckle boxing and gets a job fighting in a gym run by Napoleon. Roo is often tormented by memories of shock treatment and inhumane conditions. His friends, Capser and Ratty help him along the way, until he gets brutally beaten up by one of Napoleon's fighters...