A comedy about the working lives of plainclothes detectives Red Lilywhite and Lou Knutt who work in an outer suburban police station in Sydney. Keeping the peace on the streets and always a piece of the action for themselves, Red and Lou are completely uninterested in actually solving crimes. Their relationships with crims and other members of the general public serve only to benefit themselves. In the face of new style policing, internal affairs enquiries and corruption commissions, they are the fat blue line.