I don't want to sound crude, but the way you are asking this question tells me that you aren't very experienced in this area. It's OK, I'm not a professional either. But aside the fact that your question is just too vague, it shows that you don't understand the complexity of such a game.

Even if someone is interested in working with you, do you have expertise to offer? Programming? Art? Design experience? Simply having an idea isn't going to get you anywhere; everyone has their own ideas.