During hours three through six, the chefs must adapt to constant twists and turns. Michael Symon and Esther Choi have two chefs face elimination immediately, and the competitors navigate curveballs from Stephanie Izard in order to make it to hour seven. Then, fatigue sets in as the chefs face hours seven and eight in this intense culinary journey. Michael and Esther put forth three challenges in one where the chefs must turn one bag of ingredients into three distinct meals for judge Scott Conant.

By the end of shift four, the remaining chefs will have been cooking for 12 consecutive hours. To make it to hour 13, Michael Symon and Esther Choi present their toughest task yet -- teamwork. Working with chefs they just met mere hours ago, the competitors have to strategize, collaborate and execute under the critical eyes of guest judges Michael and Bryan Voltaggio.