Coco the koala, angry because she has gotten too big to crawl into her Mama's pouch, stomps off to find another place to sleep, and cuddles up inside the pouch of a friendly kangaroo who helps Coco find her way home again.
Coco the koala and her friend Wally the kangaroo, searching for items to turn into instruments, are forced to seek shelter from a thunderstorm in a cave where they find other animals who join them in making wonderful music.