The Biggest Loser

It's all about families in the new edition of The Biggest Loser, which features four husband-and-wife teams and four parent-adult child teams trying to lose weight through diet and exercise as they compete for a grand prize of $250,000. Trainers Bob Harper and Jillian Michaels fly around the country, surprising their teams with the news they've been chosen for the show. Then it's off to The Biggest Loser ranch in California, where the contestants get a wake-up call from the show's doctor about what ages their bodies really are vs. their chronological ages because of obesity. Then the eight teams compete in their first challenge -- and the lucky winner gets immunity from this week's elimination. Alison Sweeney hosts the hit weight loss series.

The contestants get to bid on the percentage of body weight they think they'll lose this week, and the highest bidding team can win $10,000 -- but only if they reach their weight loss goal. Then it's off to a wild "sprint and slide" challenge, with the winning team earning a phone call home. Later, Chef Rocco DiSpirito drops by to teach the contestants how to shop for and make healthy, tasty and affordable meals before an elimination round sends another team packing.

This week, the contestants take a road trip to one of the most beautiful places in the world - the Grand Canyon! On the way there, they stop by a convenience store for a temptation challenge with host Alison Sweeney that will provide the winning team a much more luxurious trip for their scenic getaway. Once they arrive at the Grand Canyon, they have to figure out how to work out with no gym and no trainers. Later, the family teams compete for an amazing prize in a kayak challenge on the Colorado River before heading back to the ranch, where medical problems threaten to sideline one contestant. Then a surprise shake-up at the weigh in makes for the most difficult and emotional elimination so far.

In part one of this two-part episode, one team gets to go home and surprise their loved ones, while another team cashes in on a prize to spend 24 hours with their trainer for a day they'll never forget! Then the contestants face their toughest challenge yet - a water tower competition that tests their endurance like never before. Later, one group of contestants incurs the wrath of their trainer when it seems they aren't working out as hard as they need to to stay on the ranch.

In part two of this two-part episode, one group of contestants tries to convince their trainer that they are committed to stepping up their workouts. Later, one of the contestants has a heart-to-heart talk with her trainer about relationship issues with their family member. And a surprising weigh-in forces one team to send a family member home when they fall below the yellow line.

This week, the contestants are left in the dark - literally - during a wild baked goods temptation, with the winner gaining considerable power that could completely change the competition. Later, host Alison Sweeney wakes the contestants up to gather them for the challenge, which will last from sun up to sundown - the longest challenge in Biggest Loser history. One contestant struggles with a decision about whether to stay at the ranch or go home, and then an elimination round sends another contestant packing.

This week, trainers Bob and Jillian take their teams through very unusual workouts unlike anything they've done before. Later, Dr. Huizenga gives the contestants a very encouraging six-week progress report of how far they've come and how much healthier they are since coming to the ranch. Then the teams square off in a difficult balance beam challenge, with the winning team getting something very special from home.

This week, contestants put their food knowledge to the test during a calorie quiz that will give the winning team a dramatic advantage in the challenge. Later, emotions run high when one contestant confronts another on the opposing team before the challenge, which leaves the players soaring to new heights. Then one contestant stuns everyone with a record-breaking weigh-in before an elimination round sends another contestant home.

It's a week of surprises for "The Biggest Losers," and the first is the news from host Alison Sweeney that they'll start competing as individuals now instead of as teams. Then comes the surprise return of all the eliminated contestants, and the revelation that only one gets to return to the game - and that decision won't be determined by weight loss. Then the contestants get a surprise visit from last season's "Biggest Loser" - Alison Vincent! Later, two contestants clash in a big way before the challenge, in which contestants have to stay one step ahead of the competition - literally. And after the weigh-in, the players get their last surprise - a twist in how this week's elimination will go down.

This week, contestants travel back in time to the 1980s, dressing the part and doing 80s style workouts and participating in a special 80s-themed challenge. Meanwhile, two players aren't speaking to each other, causing friction in the house and with one team in particular. Then an emotional elimination round sends another contestant home.

It's Thanksgiving week at the "Biggest Loser" ranch, and contestants will be celebrating with turkey, football and very special guests! First, NFL Super Bowl MVPs Jerry Rice and Steve Young stop by to put the contestants through NFL-style drills. Then celebrity chef Rocco DiSpirito helps the contestants make a healthy version of a traditional Thanksgiving dinner. Later, the contestants are really thankful when they receive special videos from home.

First, the remaining five contestants are whisked away to New York City for incredible makeovers that will show how far they've really come in their weight-loss journeys. After getting new hairstyles at a top salon, the contestants are off to Macy's, where "Project Runway" winner Christian Siriano helps them pick out new outfits to show off their skinnier new figures. Then they head to the "Tyra Banks Show," where Tabatha works her magic to help complete their transformations. Finally, the made-over contestants are revealed on the "Tyra Banks Show," unaware that their loved ones are waiting to surprise them once they walk out on the stage!.

It's the last episode before the season finale, and time for the final four contestants to reflect on their weight loss journeys and the amazing progress they've made. They'll try on their former big clothes and watch highlight videos with their trainers showing just how far they've come. Then, in their final challenge of the season, the contestants will have to carry all the weight they have lost as they race around a track, shedding one week's weight loss at each pit stop until they cross the finish line. Later, at the final weigh-in, two players fall below the yellow line, and then make their heartfelt pleas to viewers as America will once again decide which of the two will become the third finalist at the season finale.

The previous season contestant who wins the most votes will be announced at the end of "Momma's Boys" and viewers will see what the winning contestant looks like today. Two at-home viewers, one on the east coast and one on the west coast, will be randomly selected from those who voted to each receive $10,000 and a "Biggest Loser" ultimate prize pack, plus have their name shown on screen live at the end of "Momma's Boys.".