I once found these words of advice about writing a synopsis and they hang above my desk:

They might be helpful to other authors because no matter how experienced we are, we are always being reminded  of basic rules  and learning, learning, learning…..

·       WHO WANTS WHAT AND WHY OR WHAT HAPPENS?

·       WHO IS YOUR STORY ABOUT

·       WHAT DO THEY WANT

·       WHY DO THEY WANT it

·       WHAT IS THE TRRIBLE ‘OR ELSE’ THAT WILL OCCUR IF THEY DON’T GET WHAT THEY WANT.