A battleship, manned mainly by dogs (and Porky), and whose captain sounds rather like Yosemite Sam, sets sail. When the crew threatens to get to the mess hall before the captain, he orders them to halt (and they do, some in mid-air). The ship gets a radio message of a reward for capturing the pirate submarine. The crew sets out in planes to go looking, leaving Porky behind. Naturally, the sub comes after the ship, and defense is up to Porky. He manages to repel the boarding party and winches the sub onboard with a plunger.

A pony express office. Porky's only allowed to clean up and lick envelopes. When a rider comes back...

Porky Pig is tapped for a giant-killing expedition. When the expedition reaches the giant's castle (which is normal sized, requiring the giant to stoop), everyone but Porky runs at the first sign of trouble, leaving Porky alone to awaken the giant's sleeping baby. Porky then must soothe the baby back to sleep and attempt his escape.

A collection of gags set inside a prison.

A hound dog drives to the hills to dig for gold. However, a gas station hound explains that, in 1849, there was a major gold rush in the hills at the first sight of gold, and he didn't have any success digging, mining, or panning any gold. When a horseman reports a sign of gold, the station hound trades his gas station for the other hound's car and equipment.

At the Katnip Kollege, we see a roomful of cats taking a course in Swingology. Everyone swings except Johnny, who can't cut it and has to sit in the dunce chair. Miss Kitty Bright tells him to look her up when he learns how to swing. Finally, listening to the pendulum clock at night, Johnny gets the beat. He rushes out to where everyone is playing and sings "Easy As Rollin' Off a Log" to Kitty Bright. She joins in; he grabs a trumpet for an instrumental break, with the complete band. They both fall off a log; she covers him with kisses.