Based originally on the Grimms Fairy tale, I have re written and illustrated the full story. It's about a Princess who has lost her ball down a pond, and a frog pops up and saves the day. He will only get the ball on one condition that the Princess takes him back to the castle. But she doesn't, so that night the Frog knocks on the castle door, and jumps up and down inside. He eats from the golden plate and is tired, so asks the Princess to take him up. When she wakes up the next morning, he has turned into a Prince. And the Prince asks the Princess hand in marriage.
I promise you it is worth every penny. :)