After Kathy witnesses skateboarding Theo almost collide with Lucy, Mr. McDonnell bans the use of skateboards in school because the culprit doesn't own up. Lucy starts a campaign to ban sports in the playground. Theo and Laxo create a counter-website to reinstate skateboarding. A number of stylish skateboard stunts follow, with Theo, heavily concealed, interrupting netball, and even infiltrating the Staff Room. A rumour starts that "Boarderman" is Eric "XS" Smith, who talks only in the third person. He feels compelled to do a new stunt, collides with a door and is caught. Mr. McDonnell makes an example of "XS" in assembly, but the real Boarderman speeds across the stage, and wraps a banner around the Deputy Head. Mr. McDonnell makes an ultimatum - Boarderman must give himself up, and in return there will be a skateboarding club set up. Theo dons his disguise, and admits he is Boarderman, but then everyone else claims to be Boarderman too. Mr. McDonnell admits defeat - the club can go ahead, but there must be no more Boarderman!
—Geffers