As the zookeeper makes his nightly rounds, he has no idea that Gorilla is letting all the animals out of their cages. A thoughtful little bear decides to get the moon a birthday present, so he climbs a mountain to ask the moon what it wants. Granny and all the critters in her house pile on her bed for a nap, until a little flea has a big surprise. An old couple pines to have children, so the moon presents them with twelve tiny babies. A lonesome trombone playing solo is joined by a trumpet for a duet. One by one ten instruments gather together to create beautiful music. When her new brother arrives, Elizabeti wants a baby of her own. She finds a rock that makes a perfect baby.