Don, Smokey and Whopper stop a runaway stagecoach and save passenger Jenny Blanchard on their way to Placerville, where the marshal is Don's brother, Brad.
When he gets to town, Don finds someone impersonating his brother. The law counters by accusing Don and his pals of being horse thieves. Jenny vouches for their integrity with father Ben and sister Penny.
It turns out the stagecoach line owner's assistant is behind a gold-shipment theft and other crimes. Don and local miners get involved, saving the day.
Tim Holt as Don Cardigan
Fern Emmett as Jenny
Jan Clayton as Penny
Eddy Waller as Ben
Ray Whitley as Smokey
Lee White as Whopper
The film made a profit of $22,000. It was also critically well received.