Simon is about to take his driving test, but doesn't feel confident that he will pass first time, whereas Will, Jay and Neil are over-optimistically discussing the possibilities of one of the group owning a car. Before Simon even sits his test, they have already decided to go to Thorpe Park– where Neil works as a mascot. During Simon's driving test he is examined by a female examiner who tries to put him at ease with the use of sexual connotations; Simon is submissive to her advances and passes his driving test. His dad buys him an old yellow Fiat Cinque cento Hawaii as a present, (to his dislike and embarrassment) exacerbated by taunts from his friends. 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 front passenger door when he impatiently opens it whilst Simon is still reversing, and Will finally gets to the front of the queue for Nemesis Inferno, only to find there is only space for him and not his friends. He insults whoever has pushed in, denouncing them as "arseholes", before sitting down next to them to see they are from the "Happy Foundation", a charity for people with Down syndrome. After the ride they return to the car which is covered with food, and has had the windows and doors smashed in by the Happy Foundation.

Jay invites the rest of the group to visit the Caravan Club which his own family are members of. Will, Simon and Neil arrive and their experience does not get off to a good start – as the boys are eating dinner in the Cartwrights' caravan, Jay's dad goes to the toilet in a loud and unpleasant manner. Later, the boys head off to the main building at the complex for a party. Will is offered sex by a punk girl; but loses his chance when he decides to take his shoes off and slide across the hall floor like a child instead. After some flirty text exchanges, Simon tries his luck with a girl who Jay has claimed to have sex with; but when he leads her outside and takes his pants off, she is shocked and reveals she doesn't want to have sex, before running inside to tell her parents. Meanwhile, Will's shoes have been stolen by a group of eight-year-olds, and he takes to getting one of them into a headlock to retrieve them. The boys then head off – albeit without Neil, who cannot be found – before Simon can get in trouble for his earlier encounter with the girl. The following morning, the boys find Neil and he explains that he slept in Simon's car, which explains where he had disappeared to the previous night. However, it is only revealed on the Dual-carriageway on the journey home that Neil reveals that he spent the night with the punk girl, who rejected Will earlier, and had been performing fore play on each other in Simon's car – which should explain why the seats are so wet.