Inside the department, they're called Tin Collectors: Internal Affairs Agents, the police of police. If they catch you breaking rules, they'll come after your badge. If they want it badly enough, (chances are) they'll get it. But who polices them? When LAPD Sergeant Shane Scully rushes to the aid of his ex-partner's battered wife, he doesn't expect he will need to employ lethal force. But when the ensuing altercation turns ugly, Scully finds himself with no time to think and no option save the unthinkable. Now, with one cop dead at his hands, Shane becomes prey for the Tin Collectors. After they move him to another assignment, Shane realises they want him out of the picture altogether. And when Internal Affairs agents try to make him the fall guy for a web of corruption that extends to the highest levels of the LAPD, Shane Scully has no choice but to fight back.