Roy Rogers, Smiley Burnette and the Sons of the Pioneers go undercover to help Texas Governor Russell Hicks stop World War II Axis sympathizers from blowing up U.S. warehouses.

Rancher Rusty Williams is away at agricultural college and leaves his spread in the hands of his older cousin Shorty. Shorty wants to do more than run a ranch, however -- he wants to prospect for gold, but he has no money. He recruits a pair of partners in the guise of two runaway vagrants and a pair of backers in two stranded singers. But then Rusty shows up, and his four somewhat bumbling hired hands manage to compound Larry and Curly's deep ineptitude, and Rusty wants them all out of his hair.