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. Then, exhaustion becomes palpable as chefs enter hour 13 of their 24-hour competition. Michael and Esther challenge them with the unenviable task of turning microwave meals into works of art before judge Eric Adjepong decides who must clock out.