The Fae(fairy to those who don’t know) are always there. Look into any myth or legend and there’s usually a Fae in it, or something like it. So the challenge is to write a story about the Fae. the only rule is that there must be something about the Fae in it (you can call hem fairies if you don’t want to use the word fae).
Of course, have fun and good luck!!! =)