The family lives of those working on Australia's Snowy Mountains dam in the 1950s.

A truck driver plays a cat-and-mouse game with a mysterious serial killer in a van who lures young female hitchhiker victims on a desolate Australian highway.

At Melbourne's Russell Street Police Headquarters, Sgt. "Bluey" Hills, unable to work within the existing police squads, oversees Department B. They're assigned cases other departments could not readily solve by conventional means, with Hills applying his unconventional methods to bring about their resolution. Bluey's investigations are supported by newly assigned Gary Dawson, long-time cohort Monica Rourke, and undercover officer Reg Truscott, who spends his time ostensibly working as a small-time burglar, and supplying Bluey with information on the activities of local criminals.

Alvin is your average guy, except for the fact women find him irresistible and chase him everywhere. He tries to avoid them and get psychiatric help but gets used by the psychiatrists as a gigolo to treat other patients instead.