Report: Diary of a Wimpy Kid: Rodrick Rules Diary of a Wimpy Kid: Rodrick Rules is the second installment in the popular book series by Jeff Kinney, later adapted into both a live-action film (2011) and an animated reboot (2022). The story centers on the turbulent relationship between middle-schooler Greg Heffley and his teenage brother, Rodrick. Core Narrative & Characters Diary of a Wimpy Kid, by Jeff Kinney - Semicolon