Dennis and Walter enter a "Blue Peter" Competition.

The Colonel gets his toughest posting ever - Babysitting Dennis while mum and dad attend parents' evening at school. Throw in the world's largest custard pie and an attack on the school by a top secret naval weapon and you certainly won't fall asleep watching this.

The aunties from Hell arrive to stay as Dennis's house and set about teaching our hero an etiquette lesson - Shudder! Will Dennis get rid of the dreadful Duo? (Super)naturally -!