Once upon a time there was a waterfall. All the animals loved to play in it.
They found out that waterfalls were made by the water spirit's tears as they spilled over.
All the animals decided that it wasn't worth having a waterfall if it was made out of tears so the water spirit turned into her happy form: a peaceful river
Soon, all the animals were bored with the plain river and were so sad they started to cry.
While the animals are all sad, the water spirit notices. She digs deep inside of her to find a solution to keep both of them happy. When she does, she laughs so hard tears are streaming down her face again, in the form of a waterfall.
The animals all lived happily ever after with the water spirit crying tears of joy!