Celebrity MasterChef continues this week, and after four weeks of intense competition, the best eight cooks from the heats have made it through to the semi-finals. Starting tonight, the remaining hopefuls are battling for their place in the final week with a test to their teamwork.The celebrities travel to North Weald Airfield, home to the Essex and Herts Air Ambulance, to face their toughest challenge yet. Cooking in tents and faced with unfamiliar equipment, the semi-finalists must cook up a feast for 70 pilots, medics and support staff who work for this life-saving organisation.Split into two teams, it's a race against the clock as the celebrities must each design and create four mouthwatering dishes (a meat, fish and vegetarian dish, and a dessert) in just three hours. Next, it's back to the MasterChef kitchen, where they face an Invention Test using the leftovers from the previous challenge, to stay in the competition.Everything rides on the success of their dish because at the end of this challenge, one celebrity will be going home, and their dream of being Celebrity MasterChef Champion 2022 will be over.