The Bide A Wee Mouse Home has sent the orphan mouse Nibbles to spend Thanksgiving with Jerry. Unfortunately, Nibbles is always hungry.

The owner of a large house tells Tom he's going away for a while, the house is in perfect shape, and that he doesn't want Tom blaming "the mouse" (who's a family pet, in a cage) this time.

Tom and Jerry are in a bowling alley. Both spend a lot of time sliding on the well-polished lanes. Eventually, Jerry takes up residence among the pins and Tom tries to bowl him down.

Tom is conducting a symphony at the Hollywood Bowl when Jerry comes out to co-conduct.

A moment after a bottle of white shoe polish pours on Jerry, Tom hears on the radio that a white mouse, having swallowed an explosive, has escaped from an experimental laboratory and that slightest jar of the mouse could cause it to explode and blow up the entire city. It is then that Tom notices now-white Jerry and concludes it's the escapee.

Jerry agrees to help an escaped circus lion, whose first need is food. But first they'll have to evade Tom, who heard the news bulletin and is armed with a shotgun.

Tom is duck hunting, and he wings a little duckling that can't quite keep up with the flock. Jerry gets to the fallen duck before Tom, bandages his wing, and shelters him from Tom as he keeps running out to join his flock.

When Jerry rustles cheese from the Dry Gulch General Store, Sheriff Mutt Dillin hires Tom, the fastest trap in the West.

Tom, a castle soldier in 16th century France, is assigned to guard the food laid out on a banquet table. Jerry and a smaller mouse companion, two wandering "mouseketeers", make the situation miserable for Tom as they abscond with (and occasionally eat) all the food they can.

Tom chases Jerry into a bottle of invisible ink, and Jerry then proceeds to have fun torturing Tom.

Tom sets out to capture and eat a canary.

Tom, whose appetite was whetted by a radio cooking program, wants to make a meal out of the pet goldfish. Jerry, who is friends with the fish, does what he can to thwart their feline foe.

Tom inherits $1,000,000 from an eccentric aunt on the condition that he not harm any living thing - even a mouse. And guess which mouse keeps following him around and pointing this out to him?

Butch convinces Tom and Jerry that there's no reason to fight and they should all sign a peace treaty. Tom and Butch even rescue their pals from a fellow cat and dog. But then a steak falls off a truck and the boys can't decide how to divvy it up, ultimately losing it completely, and the truce is off.

Spike the bulldog, grateful to Jerry for getting him out of the dogcatcher's van, offers to help the little mouse any time he whistles. Tom, Jerry's feline tormentor, seeks to overcome this new disadvantage.

As Tom and Jerry stage their typical fight sequences, the patriotic soldier theme of the title is evidenced by such things as a carton of eggs labeled "Hen Grenades"; Jerry dropping light bulbs from an airplane like bombs; and Jerry sending a telegram with the message "Sighted Cat - Sank Same." Musical phrasings from various patriotic war songs are heard throughout.

Tom drowns in a lake and sinks to the bottom. There, he finds a mermouse, which he tries to capture and eat.

Mammy Two-Shoes tells Tom and Butch that the cat who gets rid of the icebox-raiding, breadbox-invading mouse (Jerry) is the one who can stay.

A lost baby woodpecker, that believes Jerry is its mother, does everything it can to save the mouse from Tom, who is once again in pursuit. A CinemaScope remake of the 1949 Tom and Jerry cartoon Hatch Up Your Troubles.

Tom, famous baritone Signor Thomasino Catti-Cazzaza, enthralls a concert audience with his rendition of "Largo al factotum", from Rossini's "Il Barbiere di Siviglia", while Jerry strives for sleep under the stage.