It's the final week of MasterChef 2016. All the amateur cooks have just one goal: to lift the coveted MasterChef champion trophy. The final four talented amateur cooks embark on a culinary odyssey to Mexico, where they face a series of challenges they will remember for the rest of their lives. Mexico is home to a cuisine that has remained fundamentally unchanged for thousands of years, and the finalists' journey begins in the country's capital, Mexico City, known for its extraordinary markets, exotic produce and vibrant street food. Here, they face three extraordinary challenges, guided by acclaimed chef Enrique Olvera. Over the last 15 years, Enrique Olvera has led a revolution in Mexican cuisine, inspired by the street food of the country, and his restaurant Pujol is ranked in the world's top 20. The amateurs are about to experience a baptism of fire as their first task is to set up a food stall in the heart of the market, using ingredients, cooking methods and equipment that are entirely alien to them. Next, the amateurs have the honour of taking over lunch service at Pujol, a restaurant renowned as the best in the country and famed as an international dining destination. The guests are all respected figures of Mexico's culinary world. There's no room for error as Enrique's expectations are sky high. Finally, the finalists 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 amateurs' dishes must be truly exceptional for them to stand out and prove they have what it takes to be crowned MasterChef Champion 2016.