In Kentucky, 15 chefs are off to the races at Churchill Downs for the the ride of their lives; the chefs must make a dish that will appeal to a crowd of 200 at a Kentucky Derby party; Churchill Downs' own chef David Danielson serves as guest judge.

A pregnant Gail Simmons asks the chefs to feed her cravings; the chefs head to Makers Mark, the oldest U.S. distillery, to put their spins on a meal full of Kentucky classics, including burgoo, Benedictine, mutton, hoe cakes, and dumplings.

The Restaurant Wars challenge comes early this year; first, the chefs duke it out in an amuse bouche-based Quickfire; with 12 chefs remaining, three restaurants battle for victory; Tom makes an announcement that leaves the chefs breathless.

The Restaurant Wars causes drama and mayhem; Tom announces a double elimination piling on even more pressure; chefs Karen Akunowicz and Nina Compton join the restaurant crawl along with Nilou Motamed and guest judge Caroline Styne.

The chefs walk in on an epic battle of Last Chance Kitchen and are drafted into the fight; once Tom declares a winner, the chefs begin a challenge making dishes based on Prohibition Era cocktails; chef Ken Oringer joins for a Roaring Twenties party.

Actress Lena Waithe challenges the chefs to make a trademark Kentucky dish known as the Hot Brown; chef Nancy Silverton and butcher Dario Cecchini break down a whole cow for the chefs to utilize along with locally-sourced ingredients.

For an elimination challenge, the chefs are split into teams and tasked with throwing houseboat parties on Lake Cumberland; chef Emeril Lagasse joins Padma, Tom and Nilou, along with Capts. Sandy and Lee from "Below Deck" for houseboat hysteria.

The chefs take a road trip to Nashville and cook on the stage of the Grand Ole Opry for country music artist Hunter Hayes. Then, they have to dig deep to create a dish inspired by a vibrant music memory. Next, the chefs work on a plate for a full table of Nashville food and some music personalities, including Caleb Followill, model Lily Aldridge, and Chef Jonathan Waxman.

"Top Chef" alum Ed Lee drops by for a Quickfire that's part trivia, part culinary creativity; Coach John Calipari and the Kentucky Wildcats host a concession-stand cook-off in Rupp Arena; Food & Wine Editor-in-Chief Hunter Lewis joins the judges.

The chefs take a turn at fried chicken; chef Art Smith judges a secret herbs-and-spices blind taste test ahead of the Quickfire fry-off; after the finger-licking goodness, the chefs turn their attention to boxer Muhammad Ali, aka the Louisville Lip.

Tom ambushes sleeping chefs and challenges them to make a dish using ingredients harvested from their gardens; for the last elimination challenge, the chefs bid on luxury ingredients at a thoroughbred horse auction house.

The final five chefs travel to the Chinese territory of Macau; Graham Elliot, who has a restaurant in Macau, introduces the chefs to a market full of fascinating ingredients and challenges; the chefs throw a party celebrating the Chinese New Year.

The final four chefs must cook with the smelly durian fruit; the chefs get a tutorial on the traditional cuisine of Macau; for the elimination challenge, the chefs are tasked with blending their own heritage with Chinese flavors.

It's the final showdown; the three remaining chefs must create the best four-course meal of their lives; Tom reveals in a twist that only two chefs will get the chance to serve their full menu; only one chef will emerge victorious.