Greg Heffley finds himself thrust into a new year and a new school where undersize weaklings share the corridors with kids who are taller meaner and already shaving Desperate to prove his new found maturity which only going up a grade can bring Greg is happy to have his not quite so cool sidekick Rowley along for the ride But when Rowley s star starts to rise Greg tries to use his best friend s popularity to his own advantage Recorded in his diary with comic pictures and his very own words this test of Greg and Rowley s friendship unfolds with hilarious results