Diper Overlode, Greg Heffley embarks on a new adventure by joining his older brother Rodrick's band, Loded Diper. Eager to achieve fame and glory, Greg soon discovers that the rock 'n' roll lifestyle is far from glamorous. He faces late-night rehearsals, unpaid gigs, internal band conflicts, and financial struggles. As Greg navigates these challenges, he must decide whether he can help Loded Diper achieve their dreams or if the chaos will prove too overwhelming.
