The document is about a high school senior who realizes she has been viewed as her popular friend Kylie's "Duff" (Designated Ugly Fat Friend) by others in their school. After being told directly that she is seen this way, she reevaluates her friendship with Kylie and feels alone without her best friend. Over the following weeks, with the support of her neighbor Sam, she learns to accept herself and not care what others think of her. She reconciles with Kylie and no longer lets being someone's "Duff" affect her self-esteem.