Dennis is desperate to prevent Pieface from failing Mrs Creecher's maths test! He persuades the gang to use Professor Von Screwtop's mind-swapping device. But in a disastrous turn of events, Screwtop is on the loose with the brain of Paul the potato and Pieface is left with a potato with the brain of Screwtop to help get him through the test!
Series 1: 38. Bertie's Backbone
Dennis and the gang train Bertie in the art of standing up to people so he can rebel against Walter's bossiness - but they train him too well and he becomes a dangerous reb ...
Series 1: 51. Dennis And The Beanostalk
A massive Beanostalk sprouts up in Beanotown, taking all the gang’s Christmas stuff – and Gnasher – up beyond the clouds to a land of giants! Dennis and the Ga ...