Two salesmen at opposite ends of the used-car market are trading places to see if they can make it in very different parts of Britain. In London, Louis sells supercars to Britain's wealthiest car enthusiasts, while Darren flogs reliable runarounds in Bridgend, Wales. They're both at the top of their game, but they're swapping jobs, customers and bosses in a bid to meet or even beat each other's targets. Darren is blown away by his new swanky workplace and is overjoyed to be selling Ferraris, Jaguars and Alfa Romeos with eye-watering price tags. He only has to sell one in order to earn a big commission. Darren's used to shifting high volume, but with a fraction of the customer base he's used to it won't be easy. In Bridgend, Louis is thrown in at the deep end - over a busy weekend it becomes clear to boss Dave that Louis's softly softly approach doesn't cut it, and potential sales drift away. Meanwhile, Darren is off to a good start when he impresses boss Joe with his knowledge of one particular Ferrari - he just has to get his head round another 39 supercars. In Wales, Louis continues to struggle until he hears one customer's heart-rending reasons for needing an affordable car, and he goes all out to get them what they want. In London, it's not looking good for Darren when he fails to seal deals with wealthy clients who are definitely in the mood to buy. Joe shows Darren the passion and skill that goes into restoring classic cars in a bid to improve his performance. At the end of the swap, both salesmen learn how well they've done and whether they've succeeded in a very different world.