Sir Alan sets them the challenge of taking over a pub and turning it into a themed restaurant for one day by running a kitchen and serving food to paying customers. There's one hitch; the pub kitchen they're running has never served food before.

The candidates need to work out their pub demographic and then come up with a theme. It can be anything from Old English (Bangers and Mash) to Hungarian, as long as they keep the customers happy. With a lunchtime service beckoning and the wannabe chefs all vying for dominance in the kitchen, will everything go according to plan, and more importantly, will the food and service be up to the discerning tastes of the capital's diners?