Bob and Chito are two unemployed and down on their luck travelling wranglers who help an older man, Ben Jason, replace the broken wheel on his wagon in a desolate part of Arizona. For their generosity, they are given a gold nugget and an offer of "pick and shovel" work on Ben's place. Visiting Matt Wyatt, an assayer in the nearest town, Bob and Chito are told that the nugget is of such purity that it must be from the Lost Dutchman's Gold Mine, a long lost mine that became a legend due to its wealth. Chito reveals that Ben Jason gave them the nugget. Matt schemes with the town boss, Anse Morgan to steal the map of the mine from Ben before he stakes his claim. Ben is murdered. His daughter, Judy, accuses Bob and Chito. Bob and Chito break jail and set matters right.
