After touring with Folle Vindl, his older brother Rodrick's band, Greg has had enough of the rock 'n' roll life for now. Unfortunately, he still hasn't achieved his goal of becoming rich and famous one day. Will he get the chance to do so in the new installment of the series? We can look forward to the adventure that awaits him this time. But Greg wouldn't be Greg if his 18th diary didn't also bring plenty of laughs.