Jason Atherton takes the chefs to Cadiz in southern Spain, a city famous for its seafood. The brigade must cook for a restaurant that has been run by the same family for 50 years, and is adored by locals and tourists alike. Jason must encourage the chefs to appreciate local traditions, and arranges for a local fisherman to take them to the salt flats that have provided seafood to residents for thousands of years. Back in the kitchen, several members of the brigade have to win back Jason's trust following recent confrontations.

Jason teaches the brigade the art of French classics, using fish from the local lake in order to show the brigade just how far they need to go to beat the French at their own game.