The Brown family move to their new home after having to leave their last one because 13-year-old Stanley Brown used it for one of his disgusting experiments. He's promised his mum that there will be no more exploding bogey balls, slug discos or any other revolting experiments but as the new neighbours arrive there is a rather nasty surprise in store.

Stanley and Steph lock horns as they both want a lift from Mum to go out but she cannot take them both. A plate of egg sandwiches proves to be Stanley's unlikely saviour.

Mike has an accident while testing Stanley's new invention, the dizzybuster. Stanley is forced to take Mike's place and become a junior marine; all is fine until Colonel Crawford turns up to put Stanley through his paces. Mum's bad breath and a big juicy pimple help save the day.