Jack Reagan is a slobbish,old style cop whose unsubtle methods usually get results,to the annoyance of internal affairs officer Lewis,who would be even more annoyed if he knew that Reagan was having an affair with his young wife,policewoman Nancy. After Reagan disobeys orders and a shoot-out in central London following a bank hold-up ends in carnage he is stripped of office and briefly imprisoned. However,thanks to the loyalty of his young protege George Carter and a little string pulling from his superior Frank Haskins Reagan is released to bring down the villains in a gun battle at Gravesend marina,ensuring the continued existence of his department - the Sweeney.

Lee Choe, a top-notch assassin, works for the mob. When the mob turns on him and kills his girlfriend, Lee seeks his revenge on the man who ordered the hit, John Lowe. Lowe turns to shady cop Craig Barnes, forcing him to hunt down the assassin.

Sometime in the 1970's, police officers from New York wanted a safe haven to live, away from the dangers of the streets of New York, this is when they established a "Cop Land" in the small New Jersey town of Garrison. Freddy Heflin who was always admired by the New York cops wanted to become one, but because he was deaf in one ear this prevents him from achieving his goal, but has become sheriff of Garrison. Recently there have been a dark omen surrounding the New York cops, and Freddy is now investigating on this case, then Internal Affairs officer Mo Tilden is also on the case and asks Freddy for help, but Freddy could not. Now Freddy suspects that a New York cop named Ray Donlan might be one of the many cops who is corrupted by the mob and other criminals. Now, Freddy must find a cop who is nicknamed "Superboy" who can testify against Donlan and protect him, before Donlan finds super boy and kills him.