Hoppy and his friends use their reward money to purchase a half-stake in the Whitlock ranch. However, their investment takes an unexpected turn when Wildcat Kelly convinces California to buy a well drilling rig, only to strike water instead of oil. This development threatens Jebb Hardin's water monopoly, prompting him to take revenge by falsely accusing Hoppy of cattle rustling.
Colt Comrades
Hoppy and California's oil drilling expedition uncovers a hidden underground well, which poses a significant challenge to Jebb Hardin's exclusive control over the region's water supply.