This document discusses why fundraisers are often failing at storytelling in their appeals and what needs to change. It outlines that there are two types of stories - ones that explain and ones that compel action. Stories that just explain accomplishments and needs often do not motivate donors to give, unlike stories that create tension and position the donor as the hero who can resolve it. The document provides examples of effective versus ineffective storytelling and summarizes principles from behavioral science on how to craft compelling stories that will motivate donors to support an organization's mission.