A premise is a concise summary of the central theme of your novel. It distills the plot into a sentence or two.
A strong premise matches its genre. An action-adventure premise will likely state the prize or other goal of a strong protagonist’s Hero’s Journey. A romance genre premise might briefly describe two people brought together by destiny. A sci-fi premise might ask, “What would happen if computers could build even smarter computers?”
Regardless of genre, the premise drives the plot. It is the essence of what the reader will have learned or experienced after turning the last page.
Knowing and adhering to a premise is a potent antidote for writer’s block, and it can steer the author away from many plot holes.