Greg Heffley finds himself in a new year and school where undersize weaklings share the corridors with kids who are taller and meaner. Desperate to prove his maturity, Greg is happy to have his sidekick, Rowley, along for the ride. But when Rowley's star starts to rise, Greg tries to use his best fr...

Greg Heffley finds himself in a new year and school where undersize weaklings share the corridors with kids who are taller and meaner. Desperate to prove his maturity, Greg is happy to have his 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.