Don’t start with Desire, John Truby, The Anatomy of Story, p.45

Writers who know that the story doesn’t galvanize the audience until the hero’s desire kicks in sometimes get a little too smart for their own good. They thing, “I’ll just skip the weakness-and-need step and start with desire.” They’ve just made a pact with the devil.
Opening with desire does give your story a quick start. But it also kills the payoff, the ending of the story. Weakness and need are the foundation of any story. They are what makes it possible for your hero to change at the end. They’re what makes the story personal and meaningful. And they’re what makes the audience care.
Don’t skip that first step. Ever.