A young boy's body is found, with zero evidence to help the investigation into his murder.
As gang rivalry accelerates, Blackpool's underbelly is growing ever darker and more violent. Chief Inspector Norman Pendleton and his force face increasing restrictions and rules for investigations; their hands are tied.
Four retired coppers, however, can operate much more freely, but can they really solve the lengthening list of crimes and rid their town of wrong 'uns?