Diary of a Wimpy Kid is a series about a middle school boy named Greg Heffley who documents his life in a journal, navigating social landmines, family drama, and his own schemes to gain popularity. His year is complicated by his best friend Rowley Jefferson, who often misunderstands Greg's plans, and his older brother Rodrick, who constantly pranks him. The humor comes from Greg's attempts to survive middle school, which usually backfire and create more embarrassing situations.