Ten families will embark on the ultimate family vacation with one family taking home the $1 million prize when THE AMAZING RACE: FAMILY EDITION, the three-time Emmy Award-winning reality series, premieres with a special two-hour broadcast. Phil Keoghan returns as host of the series.

One family gets lost on the way to a detour that could cost them the game.

The families travel from their Pit Stop at the Welbourne Manor, once owned by a general in the Confederate Army, to Charleston, South Carolina, flying more than 500 miles. Once there, the teams drive to a location known as the Battery and find a gazebo, where they receive a Detour clue. This Detour requires them to choose between Forrest Gump and Muddy Waters. The first task requiring them to dehead shrimp, while the second involves riding through a muddy 4x4 course. Some teams that choose the 4x4s are able to finish fast, but others get stuck and one eventually switches Detours. The teams then take charter buses leaving two hours apart to Huntsville, Alabama, where two members of each family partake in a Roadblock requiring them to endure 3.2 Gs on a centrifuge. During the long bus ride to Huntsville, the Weaver Family suffers a breakdown, but manages to find a way of coping. After completing the Roadblock, the teams then log into a product-placed internet service provider and receive a video e-mail from Phil telling them to race on foot to their next Pit Stop, the space shuttle Pathfinder.

The teams set off from their Pit Stop in Huntsville and receive a clue telling them to drive one hundred miles to Anniston, Alabama and locate the world's largest office chair. The next clue sends them to the Alabama Motorsports Hall of Fame and once there, they receive another directing them to the Talladega Super-Speedway where they'll have to complete a lap around the track. Once they get there, they find that they're not racing cars but instead traveling in a multi-person vehicle known as a party bike. After completing this task, they travel 260 miles to Hattiesburg, Mississippi and find the Southern Colonel trailer home dealership and spend the night in one of the trailer homes. The next morning, they depart at one of three departure times pulled the night before --- 7:20 A.M., 7:40 A.M. or 8:00 A.M. and travel 84 miles to Richland, Mississippi, find a BP station and meet a man named Les. They then make their way to the Pelican State, Louisiana, and participate in a Detour --- Work or Play, which requires them to either use a two-man saw to cut four 12-inch slices off a log, or travel to a riverboat casino and win three hands of 21 as a family. The teams are then finally directed to the Pit Stop, the Preservation Hall in New Orleans, where one team is eliminated after making a critical mistake.

The teams set off from their Pit Stop in the French Quarter of New Orleans, Louisiana and receive a clue telling them to fly more than 2,000 miles to Panama City, Panama in Central America and find the Smithsonian Tropical Research Institute. All teams are exciting about finally traveling outside of the United States. When the Institute opens, the teams travel across water to begin their search for a man named Ricardo Diaz and one has a close-call when the operator of their boat tries to head off and pick up someone else. Once the teams find Diaz, they receive a clue directing them to either a Fast Forward or a Detour. One team succesfully completes the Fast Forward, while another is burned and has to return to the Detour --- Rhythm or Coos. Later, the teams take part in a Roadblock in which one member must get a hit or home run against a champion Little League pitcher. The performance on this Roadblock leads to a close race to the finish.

The teams travel 600 miles from their Pit Stop at the Miraflores Locks in Panama to San Jose, Costa Rica on three charter buses leaving in half-hour increments. Once in San Jose, the teams wait for the Volcano State Park to open and then receive a clue telling them that something's brewing at the Doka Estate Coffee Plantation, 17 miles away. What's brewing turns out to be a Roadblock in which one family member must sift through 800 pounds of coffee beans for a single red one --- but one team has to wait after they are Yielded by another. After completing the task, the teams travel 90 miles to the town of Jaco and find a man named Javier at a surf shop called Roca Loca. Their new clue directs them to do a Detour with a choice of either Relic (travel to Rainmaker Adventure Rainforest, cross rickety bridges and search for four Mayan relics) or Ripe (gather fifteen bushels of bananas and then use pulleys to get them to a distribution center.) One team gets stuck in the mud and has to scramble to avoid elimination.

Safety divers are forced to rescue one of the racers who's struggling to stay afloat during a challenge, on a special two-hour episode. One family watches as one of their own takes an uncontrollable spin in a car during one of the challenges. Also, racers must leave their fear of heights on the ground as teams endure the flight of a lifetime filled with gravity-defying activities. Meanwhile, the rivalry between two families escalates into a high-speed food fight.

The Weaver's continue to annoy the other teams and one teams inability to follow directions may cost them a first place finish.

The Amazing Race celebrates its 100th episode. Three consecutive Emmy Awards for Outstanding Reality-Competition Program, over 300,000 miles traveled, 88 Teams and nearly 50 countries visited have made the first 100 episodes of Race simply Amazing. Phil Keoghan is the host of the Award-winning reality series. During this milestone episode, How's That Face Feel?, one family member amuses the rest of the family with a face plant into the water after plunging down a 60 ft. ramp on The Amazing Race 8. In addition, teams are shocked to receive a clue from an unlikely messenger, an 1,100-pound grizzly bear. Meanwhile, one racer's motor mouth drives fellow teammates crazy.

During a tranquil ride in a hot air balloon, the peace is disturbed when two Teams collide in the air. Teams are taken aback by one family's outburst and strange behavior on the race. Another family breezes through an otherwise challenging task while the other teams struggle attempting to control the herd of animals. At the mercy of an unpredictable volcano, teams are detained on their way to the Pit Stop.

One teammate’s performance overwhelms the rest of the family and gets them out of a potential jam. On the way to the Pit Stop, one team gets pulled over by the police and wonders if this will cost them the race. Tensions continue to rise as another racer pulls away from the team to perform a task on her own.

The winners of the Family Edition are finally crowned in this two hour finale.

The family edition comes to an end with this two hour finale where the winner is crowned.