Bella's new next-door neighbour is Magda. Magda is lots of fun, and soon they are best friends. But Magda is also trouble! She breaks Bella's mum's best tea set, wrecks Bella's room and covers the living room in soot. And in Trouble at School, on Bella's first day at her new school she already has a best friend - or frenemy! - Magda! Bella wants to make a good impression, but with Magda around, things don't always go according to plan.