Kookoo is a kind and well-loved kookaburra who is famous for entertaining the other bush creatures with his funny stories.
One day Kookoo runs out of kind stories to tell, and he turns to teasing and making fun of the other animals.
Refusing to listen to the sage advice of his uncle, Kookoo finds himself alone and ignored by his friends.
When he listens to the sound of his own laughter, it is an unhappy sound.
Finally he remembers his uncles words "Kindness is like a boomerang - if you throw it often, it comes back often..."