The chefs expand their horizons in a master class on Nigerian flavors guided by local chef Ope Amosu, and all-star Kwame Onwuachi. They'll have to pay close attention because for this Quickfire challenge they must create a stew that perfectly pairs with traditional Nigerian swallows. Then, "Top Chef Colorado" winner (and part-time paleontologist) Joe Flamm challenges the chefs to dig deep and dominate the competition. They'll work in teams of three to create a progressive menu of jurassic proportions to serve the judges, as well as a special guest from the upcoming film "Jurassic World Dominion."