this is a joke right? i mean... please tell me it's a joke
so you don't even have ideas, and you want someone to give you a handful to pick from. even though ideas are the easiest part to a game. then, SHOULD you like one, that someone can continue to write the story.
sorry, i think i missed the part you would be doing.
anyone can give you a dozen ideas. but at this point it looks like you're sitting back in a recliner