The moon and two owls sing to the Blue Danube Waltz, celebrating the night. Moths dance around a candle flame, fireflies glow, frogs chorus, and so forth.

Insects have made a playground/carnival out of castoffs, featuring "ice skating" on mirrors. Two love bugs head off to a more private area. But their fun is interrupted when a crow comes by. He bottles up the male bug and chases the female into her home. The male bug escapes in the nick of time, and another bug notices the battle and rallies the rest of the bugs to attack, which they do, using false teeth, an eggbeater, a mousetrap, castor oil, and other things.

Two birds rejoice over the hatching of their three eggs; as they grow, the hatchlings are taught to sing and fly. One falls from the nest and has adventures with a rattlesnake and a beehive before finding his way home.

The monkeys are swinging; their song and dance routine has other jungle creatures joining in. And two monkeys in love chase and kiss. But the hungry crocodiles lie in wait (and dance the soft shoe).

Mickey's on vacation at Camp Utopia. At first Pluto thinks it really is utopia: trees everywhere and a cat to chase. But the cabin rules are strict: no dogs indoors, and dogs must be muzzled and leashed. Mickey puts Pluto out to sleep, just out of reach of his food, and the cat comes down and taunts him. Pluto falls asleep and dreams of his "Plutopia" with a subservient cat begging Pluto to bite him and catering to his every need.

Mickey's hunting raccoons, with help from Pluto. But the raccoon outsmarts Pluto at every turn, with help from a vine, a stream, and ultimately grabbing Mickey's coonskin cap and puppeteering it as a baby coon.

Mickey and friends put on a revue for the orphans. Donald recites nursery rhymes, but the orphans torment him. Horace, Goofy, and Clarabelle do a dance number. Donald tries again. Clara clucks a song while Mickey plays piano (with support from an unseen orchestra). Donald returns, and the orphans finally send a parade of bricks and eggs on balloons over him and use slingshots to drop them on his head.

It's Pluto's birthday party, but Mickey's dozen or so nephews seem to be having all the fun. Their present is a wagon so Pluto can pull them; the "Pin the Tail on Pluto" game doesn't go quite right, and everything seems to prevent Pluto from having his birthday cake. But Mickey has planned ahead.

Rather out of place at a swanky dog show, Pluto flirts with Fifi, a dainty Pekingese. The judge orders Mickey and Pluto to leave, but when a fire breaks out Pluto rescues Fifi and is proclaimed a hero.

Mickey and Pluto go hunting for quail. Pluto scares away the first ones they see; Mickey scolds him, then relents. He shows Pluto how to be a pointer, and they set off after another quail, but Mickey accidentally jumps on a bear's nose, and thinks it's Pluto. Meanwhile, Pluto finds the quail and points. The babies climb on board and start picking at his hairs, but Pluto's been told not to move. Mickey finally comes across Pluto, who by now is covered by small animals, and realizes he's being followed by a bear. Mickey tries to reason with the bear, and backs off a cliff, onto Pluto.