When the Whistle Blows is a new ABC comedy-adventure series about construction workers and their after-hours activities. Dolph Sweet and Sue Anne Langdon head the large cast in the new show, which opens with the construction crew in competition with a group of rodeo champions. The gang attend this rodeo with various outcomes. Buzz, Hank, Randy and Lucy have organized the rodeo to collect funds and help a priest who is building a home for needy children.
Lucy (Susan Buckner) falls for a race car driver; Hunk (Tim Rossovich) tries to impress an old flame who's now a successful model.
Lucy falls in love with a champion racing driver and tries to keep him from killing himself.
Hunk (Tim Rossovich) hears he has inherited an oil company. Hunk has a get-rich scheme to pump oil on a piece of land he inherits. A hard hatter spending spree begins when Hunk learns he's inherited an oil field.
On a weekend in Reno, the guys try to help a young woman being shadowed by thugs. When the guys' camping trip to LakeTahoe turns into a comedy of errors they take over a luxury suite in a fancy hotel and turn the the place upside down.
Hunk falls for a lovely nightclub singer who is being harassed a gang of streets toughs. Hunk dates the singer at Darlene's, but Buzz (Doug Barr) reminds him that she was "a lady of easy virtue" in Reno. Hunk falls in love with a beautiful girl who is not the country and western singer she pretends to be.
A young woman longs to win the Miss Hard Hat beauty contest. Hunk takes a liking to that beauty contestant who is immediately kidnapped by her jealous boyfriend.
Norm (Dolph Sweet) asks Randy (Philip Brown) to escort his daughter to a roller-disco contest. Norm's 17-year-old daughter shows up on Randy's doorstep asking to move in with him.
Hunk (Tim Rossovich) wins a broken-down Thoroughbred in a raffle.