My Last Sunset is a hardboiled detective story set in a contemporary American high school. Damon Riley is an angry, antisocial teenager with a penchant for solving mysteries. His life is shaken up when Jessica Carpenter, a girl in the grade below his, shoots herself in the halls of the school itself, leaving behind a note that names him as the culprit for driving her to suicide. Taking the bait, Damon embarks on a quest to find out what really happened to Jessica, leading him through a web of conspiracy, betrayal, and brutality. Along the way he learns more than he ever dreamed possible about the girl he could never have saved.