To survive the violent streets of Belfast in the 1970s, young Darren McCann learns to fight. The IRA are interested in recruiting him but, though he is a Catholic, he refuses to take sides until a family tragedy allies him with "the cause". His specialist training turns him into an efficient sniper and covert operative. One brutal interrogation earns Darren the reputation as "The Butcher of Belfast" and pairs him with his infamous knife, The Killer...