The everyday public and private lives of the detectives, policemen and policewomen who work at the inner-city Christmas Street police station in Manchester.
DI Carter is put in a safe house after an arch enemy, Mark Dixon, is released from a psychiatric unit intent on revenge, convinced that Carter set him up. Dixon, a vicious rapist and murderer Carter put away some years ago, has already killed Carter's old sergeant. Meanwhile, Pcs Green and Law are assigned an undercover operation to find a local bootlegger.
