When the town threatens to close their crumbling middle school and Greg realizes he'd have to go to a different school than his best friend, he rallies his classmates to save their school before it's shuttered for good.

Publisher Annotation: When he decides to tag along with his brother Rodrick's band, Loded Diper, Greg doesn't realize what he's getting into. But he soon learns that late nights, unpaid gigs, fighting between band members, and money troubles are all part of the rock 'n' roll lifestyle. Can Greg help Loded Diper become the legends they think they are? Or will too much time with Rodrick's band be a diper overlode?

In the latest diary of middle-schooler Greg Heffley, he records his attempts to spend his summer vacation sensibly indoors playing video games and watching television, despite his mother's other ideas.

It's a new school year, and Greg Heffley finds himself thrust into middle school, where undersized weaklings share the hallways with kids who are taller, meaner, and already shaving. The hazards of growing up before you're ready are uniquely revealed through words and drawings as Greg records them in his diary.