This Columbia Pictures quickie starts with Lyle Talbot as a book-keeper for a crooked mining outfit owned by Onslow Stevens. Stevens and his mob have a small gold mine. It seems they only claim a small amount to the IRS and smuggle the rest to Mexico. There, they sell it on the black market and bank the cash.
Talbot comes home early one evening and discovers that his wife, Jean Wiles, has been stepping out with his boss, Stevens. After Stevens leaves, Talbot confronts Wiles about her new horizontal cha-cha partner. Wiles laughs at Talbot, tells him he is just a blow-hard, and that she will do as she pleases. Talbot responds that he will "fix her and her new man".
He storms out and down the street. Wiles calls Stevens to give him the heads up on what Talbot said. Stevens says not to worry, then sends his pet gunsel, William Phillips, to have a friendly word or two with Talbot. He catches Talbot on the phone arranging a meeting with the IRS. He has some info he would like to give them. Before he can spill any names or particulars, Phillips uses a switchblade to give Talbot some unneeded help with his breathing arrangements.
Douglas Kennedy is the IRS agent who gets assigned to the case. Working from the call, they trace the body, from there to his employers. Checking the mine's books, Kennedy realizes someone is pulling a fast one with the gold. Kennedy pretends to have been a silent partner of Talbot. He is a crooked IRS man who is tired of the poor pay and long hours. He wants a cut of the smuggling racket. After an attempt by thug Phillips to silence Kennedy goes awry, Steven agrees to a cut on the next load to Mexico.
The gold is melted down and molded into the frame of the car they use. They then head to Mexico to deliver the goods. Needless to say Agent Kennedy's plan to have the police swoop in and arrest the lot goes wrong. The gang tumbles to his ploy just after they cross the border. A bullet to the back of his head and a burial in a local gravel yard are planned.
The obligatory escape happens with Kennedy leading Phillips and fellow thug, David Bruce on a well-staged chase and fight through the gravel yard. Once Phillips and company are disposed off, it is a quick trip to the airport in-order to catch Stevens. Stevens has plans for a nice life in Brazil. He is dragged back to the US for a long holiday on the Government's dime instead.
A decent little time waster that veteran B helmsman Lew Landers keeps zipping along.