When the local hotel is found to be on fire, the firemen (all of them Julius the cat lookalikes), led by Fire Chief Alice, are called in. The residents are busy escaping the blaze while the cats get to work helping them out of the building and putting out the flames. When a feline tenant gets caught on the top floor, one of the firemen bravely saves her by riding a smoke cloud up to reach her, but when they get back to the ground, he finds her expiring from smoke inhalation. He saves the day by rolling the smoke out of her with a rolling pin, and when she revives the two fall instantly in love.

Julius the cat is skating on a pond when he espies a young lady break through the ice. He saves her, only to realize she's not particularly attractive, and so throws her back. Meanwhile, a kitten orphan is left in a basket by the side of the pond; Julius discovers it and takes it skating with him, afterward taking it home to Alice. They name him Oscar, and Julius tries to give the brat a bath. He then feeds Oscar and teaches him some table manners.

Alice is kidnapped by Chinese Gangsters and brought to Chinatown. Her cat tries (successfully) to rescue her, but then they're hunted by a bunch of angry Chinese Triad members.

Julius is riding through the town declaring war and the villagers promptly arm and ready themselves. While Alice inspects the troops, the opposing army (made up of mice) fires its cannons. Julius is hit and knocked completely apart; he's picked up and brought to the hospital where they put him back together with a healthy helping of spare parts. The stalwart cat returns to the field and, using a fan and a piece of strong-smelling cheese, lures the mice out of their trench, clubbing them on the head as they arrive with his multifunctional tail.

While Alice is away, her cat is guarding the house. He chases one pesky rat inside the house, and shoots a hole in the floor, which he falls through, into a vat of home-brew. With the cat thus away, the rats play, at first dancing and singing, and later playing in the bathtub. The cat eventually sobers up (after he lands in a cactus), and tries to blow up the rats (and house!) with a bomb, but the rats plant the bomb on the cat, who blows up himself, Alice, and several nearby trees.

Alice and Julius are driving a train, which is carrying a large payroll. Pete the Bear and his gang find out about it and devise a plan to rob the train.

Alice and Julius, as a team, are one of four entrants in a $10,000 balloon race. The bad guy takes out one balloon quickly. It's not clear what kind of balloons these are, since they are sealed like hydrogen/helium balloons, but a good thwack on the top by the bad guy sends Alice and Julius plummeting to the ground, balloon still intact. Julius makes some attempts to re-launch, but they fail. He spots a hippo, smoking nearby, and has an idea: using some pepper, he creates a massive sneeze that re-launches them. But he wasn't onboard. Alice throws down a rope ladder, but it isn't anchored; Julius eventually pulls himself up with a rope. They are then immediately under attack by a lightning storm, which deflates the balloon. Julius makes substitutes from, first, a weiner dog and a couple of empty thought balloons, then, an elephant with extra air pumped in. He grabs a passing bird and catches up to the bad guy, then finds himself in another battle with lightning.

A mouse and his boss pose as dogcatchers and grab a schoolhouse full of dogs; they use several other ruses to round up dogs for, as we discover, a sausage factory. Alice and Julius are on the trail soon after the first caper, but it takes them a while to catch up with the bad guys. They do, and Julius tricks the big boss into getting clobbered by the sausage guy, then turns the dogs loose on him.