A fund-raising dinner must be prepared on a remote island off the coast of Maine in 10 hours.

Creating a five-course meal for 160 passengers in a tiny kitchen aboard the Sierra Railroad Dinner Train in California.

Preparing a game-day gourmet lunch for 40 Philadelphia Eagles executives, using only food and equipment acquired from tailgaters in the parking lot.

Chef Irvine gets in touch with his inner beast tonight when he prepares dinner for 900 guests celebrating the Philadelphia Zoo's 150th anniversary. Not only must he produce results in only nine hours, his menu must be based on diets for four of the zoo's biggest attractions: birds, primates, big cats and reptiles

All the employees at Philadelphia's Bourse building have taken a vacation day, and Chef Irvine must feed the hundreds of people who come to lunch at the famous food court there by himself. He has all night to prepare, but it may not be enough time because he has to stock and open all seven restaurants with seven very different cuisines.

Chef Robert takes a trip to Vermont where he has nine hours to feed 400 of Ben & Jerry's employees with food inspired by 15 of their wildest flavors.

Like nothing before, it's David vs. Robert in the ultimate chef vs. chef battle on Palmer Street.

To help Sesame Street celebrate its 40th birthday in Langhorne, PA, Chef Robert and his sous-chefs Maria, Elmo, and Cookie Monster must cook up a menu for 250 parents and their children in just 8 hours using only the letter B as inspiration.

Chef Robert must create a fabulous dinner for 250 VIPs at the Rock and Roll Hall of Fame in just nine hours and his dishes must be influenced by six important music varieties: the Blues, Rock and Roll, Rap, Seattle Grunge, the British Invasion, and Woodstock.

In Twinsburg, Ohio, Chef Robert's mission is to create a spectacular meal for 250 twins at the largest annual gathering of twins. However, for every dish Chef Robert makes, he must duplicate it using the same ingredients, creating a new and different dish.

Chef Robert is at the Summer Slam, WWE's biggest summertime event, and he has nine hours to prepare a fantastic meal for 300 WWE VIPs. However, the dishes he creates must be inspired by the superstars' signature moves, such as the Knife Edge Chop, the Clawhold, and the Frog Splash. And yes, the Big Show, the seven-foot-400-pound enforcer will be there, breathing down Chef Robert's neck. Oh my.

Chef Robert arrives in Washington DC at the Newseum. It's none other than Mr. David Gregory from NBC news who delivers Chef Robert's mission: in 8 hours he must prepare a menu for 300 people based on four food events that occurred in American history. Chef Robert must cook dishes that represent WWI food rationing, early Thanksgiving, the creation of TV dinners, and the publication of Julia Child's "Mastering the Art of French Cooking".

Chef Robert and the incomparable Guy Fieri team up with Share our Strength and are in the spirit of giving. It's a special holiday episode of Dinner: Impossible with the Santa Rosa Boys and Girls Clubs. It's a merry mission indeed!

The host visits Philadelphia's Packer Avenue Marine Terminal, where he'll prepare a hearty lunch for 150 longshoremen, using imported goods from around the world.

Robert Irvine heads to the University of North Carolina to prepare a gourmet meal for 100 students, but he can only use ingredients that are found in their dorm rooms.

Robert arrives at the Ironman Arizona to compete in his own culinary triathlon, featuring three challenges in one mission.

Robert boards the Navy's newest destroyer, the USS Wayne E. Meyer, to receive a mission unlike any other. For the first time on Dinner Impossible, Robert will receive orders to complete two missions in just one day. The brand new destroyer is celebrating its commission week, and the pressure is on Robert to deliver two missions with flying colors.

Chef Irvine cooks up authentic pirate fare at the annual Pirates in Paradise Festival in Key West, Fla. On the menu: bone soup; hardtack; sea turtle; and pickled preserves.

Robert cooks for 200 people at the Red Rock Balloon Rally in Gallup, N.M.

Chef Irvine heads to Hawaii to cook for the "Lost" cast and crew. He'll have rely on his improvisational skills when he's left at a deserted beach to prepare the gourmet meal using limited tools and ingredients.

Robert is heading to Disney World to play the role of Prince Charming for this episode of Dinner Impossible. It's Celebrate Family Volunteers Day at Disney World and Robert's mission is to feed 400 volunteers from across the US. He'll have nine hours to prepare a meal that will make the volunteers feel like royalty. Who better to give Robert ingredients fit for royalty than Disney Princesses?

Robert prepares dinner for 100 speed daters, and he's set up with some special ingredients that must make their way into the meal.

Chef Irvine helps celebrate the 2000th episode of "Divorce Court" by separating some tired food marriages, like fish and chips, and rematching them into exciting new pairs. Judge Lynn Toler helps rate the dishes.

Robert must use coffee and tea in every dish he makes for a party at the Peet's Coffee & Tea roasting facility in Alameda, Cal.

The weather doesn't cooperate when Robert has to cook an elaborate gourmet meal outdoors using camping equipment.

Robert heads to Clearwater, Fla., home of the Philadelphia Phillies spring training camp, and prepares a meal for 200 baseball players using major and minor league ingredients.

Robert Irvine arrives on Oahu, Hawaii, with one mission: make a feast without a kitchen for 30 locals, using only produce and proteins he can gather on the legendary Kualoa Ranch. Robert and his team must battle the weather, harvest their ingredients, catch their own seafood and manage an unpredictable underground oven to pull off the impossible.

Robert Irvine's mission brings him to an abandoned mining town in Cerro Gordo, Calif. His challenge is to prepare a meal for Amy Bruni and Adam Berry of "Kindred Spirits," along with 25 paranormal enthusiasts. Using the same ingredients and equipment as miners in the region had in 1865, Robert must cook a dinner good enough to attract the local spirits that haunt the property.

In Las Vegas, Robert Irvine is tasked with catering three distinct wedding receptions in only six hours. Robert must navigate the obstacles of Sin City and find unique ways to make each couple's culinary dreams a reality, creating a picture-perfect wedding meal in his quest to make this the best day of these couples' lives.

Hawaii's historic 25th Infantry Division enlists Robert Irvine in a mission to prepare a 5-star dinner for 60 soldiers to celebrate their 79th anniversary. Using only a mobile army field kitchen and meal rations, Robert must create a high-end dinner in just seven hours. But in order to earn more ingredients, Robert must conquer a series of physically demanding, military-style challenges.

Robert Irvine is at the world-famous Cedar Point amusement park in Sandusky, OH, to make dinner for 150 superfans celebrating the park's 150th anniversary. But like any good rollercoaster, there are plenty of twists.

Robert Irvine travels to Asheville, NC, to compete against three of the best food trucks in the state in the annual Asheville Food Truck Showdown. With a $1,500 budget, the mission is to prepare enough food for 500 people and use beer in every dish.

Robert Irvine ventures to the remote forests of Mackinaw City, Mich., for a seemingly impossible two-part challenge: Create a Paul Bunyan-sized dinner to feed 50 lumberjacks and the only way he's getting help is by sawing, chopping and log-rolling his way to the finish.

Robert Irvine goes to Catalina Island off the coast of Southern California for a mission in paradise. He needs to make a celebratory meal for 75 locals and with everything on his plate, Robert struggles to finish this dinner in time and not let down the locals.

Robert Irvine is invited to the 110th anniversary of Solvang, Calif., and challenged to create a modern Viking feast. Limited to an 8th-century pantry, Robert must battle his way through a series of medieval trials in order to win modern ingredients. He'll have to rewrite history and defeat the Danes if he wants to successfully create a celebratory dinner.

Robert Irvine is in Albuquerque, N.M., home of minor league baseball team the Albuquerque Isotopes. It's Healthcare Worker Appreciation Night at the stadium, and Robert is tasked with serving an elevated dinner to 250 deserving guests. But it's not that simple. He only has access to ballpark ingredients, and he must also prepare a New Mexico-themed snack for the 400 employees who open up the stadium for the game. Robert and his team must battle bad weather, limited ingredients and frozen food to hit a home run with this dinner.