All three films of the comedy franchise based on Jeff Kinney's best-selling illustrated novel detailing the trials and tribulations of a wise-cracking pre-teen. 'Diary of a Wimpy Kid' (2010) follows 12-year-old Greg Heffley (Zachary Gordon), who, along with his best friend, Rowley (Robert Capron), spends his days negotiating the minefield that is middle school. Whether dodging bullies, learning complex and seemingly ever-changing social codes, grappling with the onset of puberty or attempting to fathom the mysteries of the opposite sex, Greg writes it all down in his diary. In 'Diary of a Wimpy Kid 2 - Rodrick Rules' (2011), just when he thought life couldn't get any more complicated, Greg is horrified to discover that his older brother, Rodrick (Devon Bostick), has taken possession of his secret diary. Meanwhile, he must navigate the hurdles posed by a summer swimming contest and the school talent show. Finally, in 'Diary of a Wimpy Kid 3 - Dog Days' (2012), Greg is having his worst summer ever. A self-confessed 'indoor person', all he wants to do is spend his holidays playing computer games in his room with the curtains drawn. But his mother has other ideas and packs him off with Rowley to stay at a country club, where - to Greg's horror - outdoor activites and family bonding are the order of the day.