Hank McHenry and Johnny Marshall work as power company linesmen. Hank is injured in an accident and subsequently promoted to foreman of the gang. Tensions start to show in the road crew as rivalry between Hank and Johnny increases.

Disaster seems imminent when scientists discover that the planet Mongo is about to crash into Earth. Luckily, heroic young Flash Gordon is on hand to lead an investigative mission into outer space and onto the speedily approaching planet. There, he and his best girl, Dale, who is along for the ride, learn that Ming, the devious ruler of Mongo, has purposely put the planet on a collision course with Earth, and only Flash can stop him.

Three young girls try to help their divorced mother find the right husband.

Moe discovers Curley's unknown boxing talent when he knocks out the Champ at a restaurant when Larry plays "Pop Goes the Weasal" on the violin. Moe becomes Curly's manager, and they win every fight, with the help of Larry. At the championship game, though, Larry's violin breaks. Curly is getting beat down bad when Larry makes his unexpected entrance and helps Curly prevail.

An inept window washer becomes an equally inept barber.

The stooges are gypped into trading their restaurant for "Thunderbolt", a washed up race horse. When Curly feeds Thunderbolt some chili pepperinos, he runs like crazy towards the nearest water. The boys enter Thunderbolt in a big race. With jockey Larry feeding Thunderbolt the pepperinos, and Moe and Curly on a motorcycle leading him with a bucket of water, they win the race.

The Stooges join the war effort by enlisting at Merchant Marines. While aboard, they have a brief run-in with (a secret German Nazi officer) Lt. Dungen (Vernon Dent), and then mistake a torpedo for a beached whale. Moe says they have to kill it, and it promptly explodes. After being lost at sea for several days, they come across the SS Schicklgruber and climb aboard. Now with fully grown beards, they come across Lt. Dungen again, who does not recognize them. After realizing they are on a German war ship they eventually overtake the crew and toss them overboard.

The Stooges get jobs selling "Brighto", what they think is cleaning fluid. After ruining a cop's uniform and a new car, they discover Brighto is actually medicine. Taking their sales pitch to a hospital, they get into more trouble and must leave on the run when the head of the hospital turns out to be the owner of the car they ruined.

The Marx Brothers take on high society and the opera world to bring two lovers together. A sly business manager and two wacky friends of two opera singers help them achieve success while humiliating their stuffy and snobbish enemies.

Mr. Bowser believes that he'll be able to clean the house better than his wife can.