Diary of a Wimpy Kid: Rodrick Rules is the second book in the Diary of a Wimpy Kid series. It mainly focuses on Greg Heffley's relationship with his older brother, Rodrick. The book was released on the Friday, February 1 2008 and was preceded by Diary of a Wimpy Kid and succeeded by The Last Straw. Rodrick is the main antagonist of this book and much of the plot is influenced by him.