A beautiful princess loses a golden ball in a deep pond.A frog appears in the water and says,"Princess,I can find your precious ball.But you must promise to love me.I must eat from your plate and sleep on your pillow.” The princess agrees.The frog dives into the water and returns with the golden ball. The princess doesn't even say thank you.She rushes home. That night,the frog appears at the palace.He reminds the princess about her promise.She doesn't want to keep her promise,but her father says she must. After three nights she wakes up on the fourth morning and sees a handsome prince standing at her bed. He says,"Thanks to you,the magic spell is broken.Now I am a prince again and we can be married!" So the prince and the princess are married and live happily ever after.