Haha, a great challenge - “who can come up with the best idea I could later use”.
Bleach got a point there. You can’t just tell us your basic plot and let us write your script. A script is something personal, if we write it for you, it won’t be yours.
You’re here at the screenwrting section, then post your ideas and we’ll comment them. But we can’t find them for you ! Won’t be fair, won’t help you.
And if you want people to take you seriously, don’t say it’s a “game/challenge” cause it ain’t serious :-X