This season's contestants head to Las Vegas where they participate in the signature dish challenge; the winners of the challenge ride on the world's tallest Ferris wheel while the losers peel 50lbs of shrimp and 1,000lbs of potatoes.

The contestants are faced with a communications challenge; the winning team goes on a relaxing retreat while the losers prepare for dinner service, which involves gutting 100 pounds of sea bass. VIP guests include astronaut Buzz Aldrin.

A rubber-duck hunt determines which ingredients the contestants will use with duck in a team challenge; the winning team spends the day on a yacht while the losers prepare a duck appetizer. Guests for dinner service include Kris Jenner and Dita Von Teese.

The contestants pair up and prepare three main dishes, each with one of the following holiday themes: July 4th, Mardi Gras and Cinco de Mayo; challenge winners are flown to Santa Inez Valley, where they blend their own wine.

The teams have 20 minutes to see which team can produce the most shrimp dumplings; rapper The Game attends the dinner service.

The blue team gains a new member; the team that wins a grocery spelling challenge spends the day flying in a stunt plane, while the losing team makes sangria for dinner service; VIP dinner guests include Thomas Ian Nichols and Omar Benson Miller.

The teams must create six unique dishes for former sous chef Andi; while the challenge winners spend the night in Las Vegas, the losing team makes a mountain of macaroons; dinner service has the contestants cooking for Andi's wedding reception.

Grammy-winning guitarist Steve Vai performs; the contestants must create unique dishes with a limited number of ingredients; the winning team plays a game of paintball while the losing team is faced with delivery day at the kitchen.

The contestants compete in a Bison-dish challenge that test their archery and cooking skills; cowboy-steak night with news commentator Stacey Dash and Olympic gold medalist Phil Dalhausser.

The nine remaining chefs take part in a breakfast challenge, during which their team must make a vegetarian, meat, seafood and sweet dish for surprise judges Suzanne Tracht and David LeFebve. While the winners ride all-terrain vehicles in Palm Springs, the losers prepare fresh-squeezed Orange Juice for a special brunch service featuring celebrity diners Flo Rida and Jeff Dunham.

The teams can only have one chef in the kitchen at a time as they prepare three entrees, each with a different protein; actress Lainie Kazan and comedian Bill Engvali are guests at dinner service.

The chefs must identify ice cream flavors in a blind test challenge; actress Meredith Baxter and Olympic swimmer Haley Anderson are guests at dinner service.

The remaining six chefs must rely on their loved ones to complete Chef Ramsay's Branzino dish; the winning team will be awarded a day at a luxurious spa while the losers have to clean the entire dormitory.

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