When rancher Jim Thornton discovers gold in Gold Valley, he sends for Lash and Fuzzy to protect his treasure from a band of gunslingers.

Hoppy, Lucky and California search for a mine owned by Trudy Pendleton after it was taken from her by thw swindling gambler Ace Gibson. They find the mine and Hoppy fights Gibson over it.

Hoppy and Lucky have been called in to investigate a series of stage holdups. The robbers are taking gold from Colby's mine and Hoppy suspects it may be ex-outlaw Colby himself. When Speedy strikes gold, Hoppy borrows it and announces a gold shipment hoping to catch the gang and their leader.

European bad guy Baron Bendor leads some local townsmen in a plot to obtain horses through theft. Hoppy and his sidekicks Lucky and Speedy must find and expose the horse thieves.

A gang of teenage delinquents terrorize a small community by stealing cars and stripping them for parts, then selling the parts to a crooked junkyard owner. The police and an insurance company investigator set out to break up the gang.