Simon is about to take his driving test, but does not feel confident that he will pass, whereas Will, Jay and Neil are over-optimistically discussing the possibilities of one of their group owning a fully-fledged driver's licence. Before Simon even takes his test, they have already decided to go to Thorpe Park - where Neil works.
Despite Simon's poor driving abilities, he is able to pass his test, because his female examiner has a crush on him. His dad then buys him a small yellow Fiat Cinquecento Hawaii, much to his dislike and embarrassment. Simon then goes to collect Will and Jay to take them to Thorpe Park.
After the journey - which includes "stalking" a car full of girls and interfering in a funeral procession - the boys finally arrive at Thorpe Park; although things do not go to plan there either. Jay detaches the passenger side door when he impatiently opens the door whilst Simon is still driving and the boys end up having to carry the door around with them all day. When Will finally gets to the front of the queue for Nemesis Inferno, he is told that there is only space for one more person at the front, meaning that he, Simon, Neil and Jay cannot all sit together. Will demands that whoever has pushed in moves, calling them "inconsiderate arseholes", before sitting down next to them, only to realise they are from the "Happy Foundation", a charity for people with Down syndrome. After the ride they return to the car which has been vandalised by the Happy Foundation.