Once upon a time, there was a beautiful princess in a big castle. One day her father the king gave her a golden ball as a birthday present. 

One evening she went out with her ball and started to play with it

While she was tossing the ball in the garden near the pond it fell into the pond and stink it to deep waters. The princess sat next to the pond and started to cry.

Suddenly she heard the voice "Ribbit! My beautiful princess why are you crying. Ribbit!". She looked around and saw a frog. The princess told the frog about the ball.

The frog came next to her feet and made an offer"If you accept me as your friend and allow me to live with you in your castle, I will get your ball".

The princess thought about it and accepted the offer. So, the frog jumped into the water and brought the golden ball and threw it to the princess.