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The teams learn that only one member's weigh-in will count for the week, and the representative is chosen by a roll of the die. Also: The players compete in a water-bucket race; a contestant receives a troubling health update; a player connects with a family member; and one of Season 14's child ambassadors revisits the show.

The contestants bid on gym equipment in an auction. Later, one player discusses her difficult childhood; the contestants contact their family members; and Season 12 contestant Vinny Hickerson makes an appearance.

The contestants must scavenge through a pumpkin patch in search of immunity, but temptations lurk around every corner.

Last season's kid ambassadors Biingo, Lindsay and Sunny return to the ranch and are joined by the White House Senior Policy Advisor on Nutrition, Sam Kass, for a fun cooking challenge with the contestants. Well aware that kids are often the toughest food critics, the red, white and blue teams race against the clock to prepare a nutritious and tasty dish that will be a hit with the kids - and earn the winning team members an incredible prize. Also this week, one team works out with a very special and inspiring group of women who have survived or are battling cancer. Later, it's time for the weigh-in and saying goodbye to another contestant

It's a busy week at "The Biggest Loser" ranch, which kicks off with a fun bouncing ball challenge that will award members of the winning team a welcome cash prize. All of the contestant take an emotional walk down memory lane watching their casting audition videos, reminding them why they are at the ranch -- and how far they've come in just six weeks. Ruben and Dolvett visit music icon and 16-time Grammy Award winner David Foster at his home, where Ruben isn't the only one stepping up to the microphone. And the show's most recent "Biggest Loser" winner, Danni Allen, stops by for lunch and a pep talk with the contestants. Then it's time for another tense weigh-in, where one more contestant will face elimination.

The contestants celebrate Thanksgiving week with a special challenge - racing to load boxes of Thanksgiving food into trucks headed to help tornado victims in Moore, Oklahoma, where one player has a special connection. Members of the winning team are very thankful for their prize - a holiday dinner shared at the ranch with loved ones flown in for the celebration. Emotional reunions follow, as the winning team, their trainer and their family members gather for a Thanksgiving feast and share what they are most grateful for. Also, one player gets encouragement from his trainer to talk to his family about a long-kept secret, and the show catches up with one of season 14's child ambassadors, Sunny, to see how she is doing today. Then it's time for weigh-in and another elimination, which leaves one trainer giving a very tearful and emotional farewell to one of their players.

Alison drops a bomb on the contestants: this week, another person will be going home. Before there's time to freak out, she informs them the one person chosen to go home will represent his or her entire team at next week's weigh-in and take the team trainer home for the week. A massive wheel with the contestants' faces on it is spun and the lucky/unlucky winner is... Jay from the White Team! Although Jillian is less than thrilled to go to Farmington, Missouri for the week, Jay is ecstatic to see his family again. He's greeted by a packed room of friends and family.

The contestants meet in a diner to answer questions about obesity, and the losing team must work in the eatery for a week. Meanwhile, a trainer helps one of the players work through personal obstacles; and a contestant's family get on a healthy track.

The teams are dissolved, and the 10 remaining players compete in an endurance challenge before a double elimination takes place. Meanwhile, the trainers work out with different contestants; and a player struggles with negative thoughts.

The eliminated contestants return to the ranch for a second chance to get back into the competition.

The contestants arrive in Park City, Utah to begin their week of training with Olympic athletes. They meet with Dolvett, who introduces them to eight-time Olympic speed skater Apollo Ohno. Apollo introduces the contestants to the Olympic training center and gives them a few tips on handling the psychological aspects of training.

The contestants meet with stylists Tim Gunn and Ken Paves to get new styles for their new looks.

The stakes are higher than ever when the five final players compete in a "Biggest Loser" first -- a sprint triathlon, requiring them to swim a mile, bike 12 miles and run three miles. The triathlon winner will secure a coveted spot as a finalist, as well as a brand new Ford Fusion. Then it's an emotional trip down memory lane as the contestants watch footage of their journeys with their trainers, and see firsthand how far they've come since arriving on the ranch. Later, it's time for the last weigh-in before the finale, where two players will fall below the red line and go home, and two more will become finalists, joining the triathlon winner to compete for $250,000 and the title of "The Biggest Loser" at the season 15 finale.

In this must-see, exciting live finale, the 15 contestants from this season return for a special reunion and a chance to weigh in one last time - and show America how much weight they've all lost since beginning their weight-loss journeys. Those who have been eliminated will compete for the $100,000 "at home" prize. Then it's the moment viewers have been waiting for, when one of the three finalists will be named this season's "Biggest Loser" and win the coveted grand prize of $250,000.

A new set of hopefuls are introduced for the first time.

The players compete on a assault course, challenging them to break through excuses that are getting in their way.

The contestants test their nutritional understanding before competing in an endurance challenge. Meanwhile, an inspirational "Wall of Glory" reminds them of their athletic days and provides motivation to work harder at the gym.

A lottery challenge takes place, in which one contestant is selected to go home with a trainer for the week—and the chosen person's weight will the only one that counts for the team's weigh-in. Meanwhile, the remaining contestants try to keep up with their plans at the ranch without their trainer; and two eliminated players compete at Comeback Canyon.

The teams are challenged to race through the air across a canyon and then solve a puzzle; and the winners get the chance to sideline one player from the losing team at weigh-in.

The contestants face a tailgating challenge, where they are tempted with high-calorie comfort foods. Later, a player discusses emotional issues with his trainer; and Bob receives a gift from a "Comeback Canyon" contestant.

In a pool challenge, the teams are tasked to hold a percentage of their body weight in order to keep their trainers from falling into a pool, and the last-place team loses its trainer for the week. Elsewhere, two eliminated contestants team up at Comeback Canyon; and one contestant gives her trainer a look at her past.

The players compete in a challenge involving water and giant treadmills, and the winning team gets a chance to penalize the two losing teams. Elsewhere, Bob Harper advises two Comeback Canyon contestants about setting priorities.

NFL stars Michael Irvin, Donald Driver and Willie McGinest visit the ranch, where they participate in a football challenge and offer the contestants training advice.

The ranch is rocked when the teams are dismantled and new teams are formed. Chef Rocco DiSpirito has to judge which team has managed to create the healthiest and tastiest dish.

A sandpile challenge is attempted as the players try to lose 50 pound collectively. Also: Players reflect on their accomplishments and communicate their goals while hiking with their trainers.

The teams disband and the players compete on their own for the first time in an obstacle course, with the grand prize being immunity. Later, the trainers surprise the players with videos featuring words of encouragement from loved ones

Part 1 of 2. The players head to Hawaii, where they participate in a kayak challenge. Later, a trainer and a player who both fear the open water try snorkeling.

Conclusion. Contestants face their fears in Hawaii. Included: One player tries rappelling down a waterfall, and another goes rope-swinging through the jungle. Later, the contestants use coconuts to tackle a lacrosse-inspired obstacle course.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

It's down to the final four - Rob, Sonya, Woody and Toma - and after 17 weeks, someone's dream of becoming a finalist comes to an end.

The contestants walk into the gym to see Jenna Wolfe, the lifestyle and fitness correspondent for the Today Show. Despite being seven months pregnant, Jenna shows the players how to work out without a gym. At the same time, Bob Harper gives the other trainers a workout of a lifetime.

Contestants from this season reunite and reveal how much weight they've lost; the at-home winner is revealed; the grand-prize winner is announced.