<p>Seventeen-year-old Henry has one adventure after another during his vacation!<br>With his friends, he gets a rusty handcar up and running. They explore a disused railway line and discover a mysterious tunnel. Girls have never played a role in Henry's life?until the pretty, disabled Karen appears on the scene... Will he manage to lure her out of her shell? During a short vacation with his grandparents in the small seaside resort of Reddingbourn...