[quote=@Cao the Exiled]
I am very much interested in this competition but I need to know first. Is it allowed that we use copy write protected topics like D&D? I have a few characters I could easily write this about.
[/quote]

Usually the intent when I write a contest is that people write up new worlds and characters. That is simply a loose intent, however, and not a hard-written rule. If you have an idea for a story, you are more than free to go ahead and write it with pre-existing characters if you please.