30 Day Novel (general)

So it has been presented to me that, next month, a group of writers get together, and write a novel in 30 days. The plan is to complete 175pages & 50,000 words. Although this may seem like a hard task to complete, I think I am going to give it a shot. So now of course comes the topic, then direction, and so on and so forth. Anyway, if you were going to read a novel today, just picked up a book and started reading, what would it be about?