Join Bertie in Trouble!, Poop! and Splash! as he concocts a magic potion for Miss Boot to make her forget the dreaded maths test, finds himself at Know-All Nick's house for the worst sleepover ever, unexpectedly wins out over the school bully, tries to prove Whiffer isn't the mystery pooper, scuppers Miss Boot's chances of winning Teacher of the Year, steals the spotlight on the set of a blockbuster movie, takes Know-All Nick for a ride at the waterpark, goes on the trail of Angela's missing cat and finds himself out-manoeuvred by Miss Boot on the dance floor.

There's never a dull moment with Dirty Bertie.