Act One: Show how the flaw is a problem.
Inciting Incident: Show how the protag will be forced to face the flaw.
Act Two Up: Show how the protag attempts to solve the problem without facing the flaw.
Midpoint: Show how the protag accepts the flaw.
Act Two Down: Show how the protag fails to fix the flaw.
End Act Two: Show how the flaw defeats the protag.
Act Three: Show how the protag defeats the flaw/how the protag is destroyed by the flaw.
Reverse for the antagonist.