The Bellows family causes comic confusion on an ocean liner, with time out for radio-style musical acts.

Nicky Nelson is a fast-talking sideshow barker with a wax-and-alive concession on Atlantic City's boardwalk. Even with the band of his friend, struggling musician Gene Krupa, playing on the sidewalk to attract the customers, "The Living Corpse" and other low-rent acts aren't enough to lure the seen-it-all boardwalk strollers, and the landlord closes the show in lieu of never-paid rent. Nicky, always promoting, goes to Stephen Hanratty, head of the pier's Dance Pavilion, to plug Krupa's band as an attraction, but Hanratty won't even listen to them. But, while there, he meets singer Lily Racquel, who knows he is a phoney but might have the ability to to talk a radio-station manager into giving her an audition. She gives him a ring to help finance the project; he promptly loses it in a crap-game.

Daggett is out to stop the completion of an oil well. He cheats Foster at poker and then forces him to delay the drilling. But the Mesquiteers are on the job with Lulaby posing as a cleaning lady to get evidence.

In 1937 the life in out West has not changed much. The boys are working at the Wyoming ranch of Captain Marvin herding horses which he sells to Kurt Redman. Marvin will not sell any horses to any army, but the boys find out that Redman is a German agent shipping the horses directly to the Third Reich. When Marvin tries to stop Redman, his son Tad, who is studying medicine in Germany, is arrested and held hostage. Marvin must fire the boys as the sneaky German agents take over the ranch, but the boys will not give up their attempt to stop them.

It is 1853 and settlers are pouring into California which means trouble for the old Spanish landowners. The El Dorado Mine Co. wants the land of Don Ortega for the minerals and is using the settlers and his friend Don Carlos to take the land over. But Tucson is on the side of Roberto and see's that something is not right with all the trouble they have been having. But the situation turns ugly for Don Ortega when Roberto is set up for a murder he did not commit.

Dr. Bill Remsen pretends to be a policeman, and ends up being assigned to guard Judy Marlowe. Amazingly, he falls in love with her.

Band tries to get an audition for a job at a prestigious nightclub.

Commissioner Tredwell is the law of the land and he gets whatever he wants with the help of hired guns and lackey lawyer Conners. The only one who publicly stands up to Tredwell is Beecham of the Clarion. Beecham has his paper burned to the ground and when he starts a petition to make Wyoming a state, taking the power away from Tredwell, he is killed. But when Kansas Kate comes in to visit her son Conners, she sees what is going on and she takes over the paper and keeps the pressure on Tredwill. With this Conners has mixed emotions, but the boys do everything they can to protect Kate and the paper. Written by Tony Fontana

After a payroll robbery the Mesquiteers catch up with the gang. But the members escape, the gang leader is killed, and they end up with only the leaders young son who is quickly sent to a work farm. They adopt the boy hoping to learn where the money is. Just as their kindness is about to pay off a gang member takes the boy away forcing him to retrieve the money. - Written by Maurice VanAuken

It's "The Three Mesquiteers" again. Gaucho escapes from Braden's gang only to be shot by them. The Mesquiteers drive away the outlaws and take his money on to his mother. But Isabella thinks Tucson is her long lost son and they don't have the heart to tell her he is dead.