A Republican sniper is on a rooftop. He tries to smoke a cigarette, but someone shoots at him from the other side of the street.
The sniper hides behind a chimney. An armored car drives up and an informer tells them where the sniper is.
The sniper shoots and kills the man in the car and the informer with his rifle. He gets shot by the other sniper across the street.
The sniper cleans up his wound. The armored car drives away. He needs to kill the other sniper to escape.
The sniper tricks the other sniper into thinking he is dead and kills him. The dead body falls off the roof onto the street below.
The sniper is immediately hit by remorse and curses everyone and everything. He almost accidentally shots himself which brings him back to his senses. He empties his whiskey and comes down to street level. He suddenly wants to know who he killed. A machine gun almost shoots him but he reaches the body. He turns it over just to learn that it is his brother.