Okay people. Here's another one. I love making these.
You sold your soul to the devil some years ago. Today, he comes and gives it back, saying, "I need a favour."
Ta-Da!!! That is It. You've got all the imagination for yourself. Play with words and plots. Twist your story. Do absolutely whatever you want.
Things you need to keep in mind:
1. Make it interesting and make sure the reader does not sleep half-way.
2. Word Limit - up to five thousand words.
3. If it is a love story, do NOT generate offsprings of the protagonist and your devil. It takes away the fun and makes the story a little obvious. (Unless you have something totally different up your sleeve!)
4. Enjoy writing. It is what is most important.