24 in 24: Last Chef Standing

The four remaining chefs have survived 20 challenges and beat out 20 other chefs to arrive at this moment. In the final hours, hosts Michael Symon and Esther Choi revisit an old challenge where the chefs must cook the best dishes of their lives. Whoever can stave off the final daggers of exhaustion and impress a superstar panel of judges will walk away with a $50,000 prize and an unforgettable trip to Hawaii.

As hosts Michael Symon and Esther Choir introduce hour 18 of non-stop cooking, the chefs are bruised, battered and at their breaking point. Simplicity is one of the most difficult techniques to master for any chef, and when they're this exhausted, it borders on impossible. Guest judge Brooke Williamson decides which four chefs will receive a spot in the finale, a mere four challenges and three hours away.

Hosts Michael Symon and Esther Choi begin the most devious shift of all as the chefs earn points during each challenge. They'll be tested in cooking, strategy and much more as guest judge Maneet Chauhan decides their fate. Whoever has the lowest point total at the end will have to clock out, just two shifts shy of a massive pay day.

Exhaustion becomes palpable as the chefs enter hour 13 of their 24-hour competition. Hosts Michael Symon and Esther Choi challenge them with the unenviable task of turning microwave meals into works of art, and that's the easy part! Guest judge Eric Adjepong will decide which of these chefs must clock out.

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.

Fatigue starts to set in as the chefs face hours seven and eight in this intense culinary journey. Hosts Michael Symon and Esther Choi put forth three challenges in one where the chefs must turn one bag of ingredients into three distinct, delicious meals. This never-before-seen social experiment will be over for whoever fails to impress guest judge Scott Conant.

During hours three through six, the remaining chefs are forced to adapt to constant twists and turns. Hosts Michael Symon and Esther Choi have two chefs face elimination immediately, while the others enjoy a moment of rest. Then, the chefs must overcome restrictions, curveballs and expert judging from Stephanie Izard in order to make it to hour seven.

The first three-hour shift is designed to test one of the most important qualities a true master must possess: speed. Speed judge Jet Tila will taste and score every dish, separating the leaders of the pack from the chefs on the brink of elimination. Right out of the gate, the chefs are served up a shocking twist that sets the tone for the rest of the competition, letting them know that no one will be safe from elimination until the end.

After more than 20 nonstop hours, Michael Symon and Esther Choi ask the final chefs to create an elevated lunch and dinner; judges Antonia Lofaso, Graham Elliot and Jet Tila decide who will win $75,000 and the title of "Last Chef Standing."

In the final shift, Michael Symon and Esther Choi give the five remaining chefs a familiar challenge before asking them to create an elevated breakfast, lunch and dinner for judges Antonia Lofaso, Graham Elliot and Jet Tila.

The chefs make spicy street food and a fish dish for judge Andrew Zimmern.

Frustration and fatigue mounts in hour 16 as co-hosts Michael Symon and Esther Choi ask the eight remaining chefs to work in teams to make a soup and sandwich, all while handling three culinary curveballs that threaten to ruin their chances at survival. After the first challenge, one team is safe while the other team is left to keep on battling. Judges Carlos Anthony and Brian Malarkey decide who will move on to shift seven.

The chefs turn breakfast into a different meal for judge Brooke Williamson.

The chefs prepare artwork-inspired food for judge Fariyal Abdullahi.

In a shift that tests resourcefulness, Michael Symon and Esther Choi ask the 11 remaining chefs to create a three-course meal worthy of a black-tie event in 60 minutes; judge Jet Tila decides which chef will be clocking out.

Michael Symon and Esther Choi begin the second shift with two chefs in a head-to-head elimination that tests simplicity; the 12 remaining chefs face a tricky taste test from judge Graham Elliot.

In the first shift, the chefs endure three challenges testing speed to impress judge Antonia Lofaso.

Michael Symon and Esther Choi challenge the final three chefs to elevate the humble weeknight family meal and cook a Michelin-worthy dish to earn the title of Last Chef Standing and win $100,000.

Michael Symon and Esther Choi present the final five chefs with an epic obstacle course. Legendary judges Alex Guarnaschelli, Jet Tila, and Jean-Georges Vongerichten decide which two chefs will be clocking out.

Co-hosts Michael Symon and Esther Choi challenge the chefs to take risks and earn as many points possible when they prepare food for judge Marcel Vigneron. Then, the chefs have a very limited time to execute two exacting dishes, and judge Andrew Zimmern decides which chefs advance to the final shift.

Co-hosts Michael Symon and Esther Choi challenge the chefs to take risks and earn as many points possible when they prepare food for judge Marcel Vigneron.

The chefs must temporarily put individual ambition aside to battle in two teams of four to impress judges Brooke Williamson and Ayesha Nurdjaja, who send two chefs home.

Co-hosts Michael Symon and Esther Choi challenge the remaining chefs with constant twists and turns, and adaptability is the key to survival as they make their best noodle dish for judge Marcus Samuelsson.

The chefs make a black-tie entrée in 90 minutes with only five ingredients.

Michael Symon and Esther Choi give the remaining chefs three challenges that test their ability to think and cook fast, including a team relay race and a 15-minute fast-food dish. Expert judge Judy Joo sends two chefs home.

The chefs begin their first shift and try to impress judge Jet Tila.