4. The point of plot is change. The events should cause a change in the protagonist’s inner life, to trade her original goal for a more worthy one, to face a personal issue she’s ignored before, or to resolve a longstanding internal conflict.
Example: In Stephen King's The Dark Tower series, Roland has long been determined not to care or love again. Through the events of the plot, he is forced to choose some unlikely allies to help him on his quest. After several battles, he learns to trust them. And in the end, it's his ability to love again that lets him complete his quest to reach the Dark Tower.
Your turn! Consider the progress of your plot events and how they change the protagonist. How is this character different in the end because of going through the plot events? What can he/she do in the end that was impossible in the beginning?