The story begins with a quiet, sensitive, 15-year-old boy named Charlie writing letters about his life to an unknown recipient. Charlie chooses that person because he said that he heard he was nice and thought that this person would not be judgmental. He discusses his first year at high school, grappling with two traumatic experiences from his past: the suicide of his only middle-school friend, Michael, a year before, and the death of his favorite aunt, Helen, during his early childhood.