I found a great site, but of course I didn't save it. Basically it is this...
Who is your MC, what do they want, what is at stake? The shorter and more concise, the better. Think of it as your hook or log line.
Ie. for Green Eggs and Ham
Clinging to safety in the known, a negative Nelly tries every excuse in the book to get rid of his nosy neighbor who will stop at nothing to get Nelly to try his beloved cuisine.
Or something like that. It actually is easier than the query IMO.