Finals week continues as the final four talented amateur cooks embark on a culinary odyssey to Mexico, where they face three extraordinary challenges. The finalists are tasked with setting up a food stall in the heart of the market in Mexico City, using ingredients, cooking methods and equipment that are totally alien to them. Next, the amateurs have the honour of taking over lunch service at Pujol, a restaurant renowned for being the best in the country. Finally, the amateurs have the daunting challenge of creating an exceptional dinner at the British Embassy for some of the leading figures in Mexico's cultural and food communities. Inspired by their Mexican culinary adventure, and showcasing the skills they've developed through their entire MasterChef journey, the final four's dishes must be truly exceptional for them to stand out and prove they have what it takes to be crowned MasterChef champion.