The film opens with Bosko taking a bath while whistling "Singin' in the Bathtub". A series of gags allows him to play the shower spray like a harp, pull up his pants by tugging his hair, and give the limelight to the bathtub itself which stands on its hind feet to perform a dance.
Bosko is a construction worker who impresses Honey by making music from everything in sight, including a decapitated mouse, a typewriter and a goat filled with hot air.
Bosko and Honey go on a picnic that ends badly.
Christmas Eve. A poor orphan boy trudges through the snow, pathetically. He finally arrives at his miserable cabin. While he is crying, Santa arrives and, singing the title song, offers to take the boy to his workshop. They arrive, and the toys go wild. He plays with a few toys. A candle falls off the tree and starts a fire. The toys try in vain to fight the fire; the boy hooks up a hose to a set of bagpipes and takes care of it.
A streetcar conductor has adventures with a would-be passenger hippo, a cow blocking the tracks, and a runaway train while he, his passengers, and some hobos sing the title song.
Bosko has a grand time on the farm, dancing with a cow, playing a horse's tail like a violin and getting drunk with three pigs.
At a nightclub, the crowd demands Goopy Geer, and the lanky dog doesn't disappoint them. He gives a zany performance on the piano, but the employees and the customers are just as wacky. A gorilla waiter dances while serving. Three identical cats display a peculiar way of eating. A chicken has a nauseating way of making chicken soup. The nightclub singer tells corny jokes. Even the hat racks come to life and dance. A horse imbibing a too-strong drink provides the show-stopper.
The cat of the house has its nap interrupted by two playing puppies, which sets off a chain of events.
Gnomes greet the coming of spring by manufacturing various bright colours.
Bosko hunts in the jungle, but ends up playing music with the animals.
The animated adventure of a fawn and a satyr who is only animate during daylight.
Bosko runs a hot dog stand at an amusement park; but he sneaks away to the racetrack to ride his mechanical horse.
Bosko and Honey yodel happily in the Alps until a series of disasters end with Honey rushing downriver on an ice floe.
During the Great War, Bosko and a fearsome beast are in a dogfight. Bosko loses, but that's only the first battle.
Bosko is a doughboy in the Great War.
Mrs. Mouse is reading "A Visit from St. Nicholas" to her brood when a cat tries to break in. The cat overhears them arguing about the existence of Santa, so he dresses up accordingly.
Late at night, the mice come out and sing and play to the title tune, among others. That is, until the cat arrives, but he's quickly sent packing.
Bosko fishes, and sings and dances with frogs. But two ladybugs use a wasp as an airplane, and a beehive and tree branch as a machine gun to drive him away.
A dark and stormy night in a drugstore. The druggist mixes a potion and falls asleep. The skull-and-crossbones on the bottle comes to life and drips the potion on the druggist.
In this first entry in MGM's Happy Harmonies series, an old man tells a newsboy about his adventures with Native Americans in the Old West.
