Jim Longworth takes Callie's son Jeff to a heavily-wooded area to collect bugs for a school science project. In the effort, they stumble upon an abandoned airplane with a dead body inside. The victim turns out to be a retired Special Ops guy who taught flight school lessons on the side to make extra money.

The team attempt to build some interesting motor homes before setting off for a Bank Holiday weekend in the West Country to see how what that they have created holds up. Jeremy test drives the new Audi R8 V10 Spyder and the latest version of Porsche's enduring 911 Turbo cabriolet to see how they compare.