In To Sell Is Human there's a great bit about Pixar. How they've created a six-sentence pitch that works for every Pixar movie.
Once upon a time _______________. Every day, ______________.
One day ______________.
Because of that, _________________. Because of that, _______________.
Until finally ________.
You could craft a good brand story with that, too. Not always helpful. But I bet there will be an assignment sometime where this proves to be a good device.