1) A princess loses her golden ball in a spring while playing in the woods. A frog emerges from the spring and offers to retrieve the ball if the princess lets the frog live with her.
2) The frog brings the ball back and asks the princess to let him into her house. Though reluctant, she agrees. The frog visits her for three nights, transforming into a prince by the third night.
3) The prince explains that he was under an enchantment by a fairy that could only be broken if a princess let him eat from her plate and sleep in her bed for three nights. The princess agrees to go with the prince to his kingdom where they live happily ever after.