Four fit chefs take on the challenge to cook creative, healthy dishes that are light on calories but big on flavor. A faux noodle and a beautiful fish fillet are two of the round one mystery ingredients, and the second round revolves around a diet drink and a protein-packed snack box. When both remaining chefs plan to use the ice cream machine for their acai berry powder desserts, there's a chance someone will be left out in the cold when time runs out.