It's the final week at the ranch and emotions run high as the contestants prepare to return home. In the final challenge, the players decide to compete as a team in a "Biggest Loser" triathlon. After the elimination, the remaining four contestants say goodbye to their trainers and return to their families to see if they can continue losing weight on their own.

After weeks of training and careful eating, it comes down to choosing "The Biggest Loser" in this special two-hour, live season finale. The final four contestants weigh-in one last time for the chance to win the grand prize of $250,000. Jaw-dropping transformations will be seen as all 50 contestants return to reveal their newly slimmed bodies.

In the two-hour season premiere episode, the contestants are dropped in the middle of the desert and trainers Bob Harper and Kim Lyons dramatically skydive to the ground below about a mile away from them. New host Alison Sweeney explains that the first two contestants to reach the trainers will become team captains and will have the tough decision of picking five team members each. Sadly, they realize that means six people will be going home before the game has even begun. Once the teams are picked, the rejected contestants are heartbroken that their journey is already over. But in the new season twist, former trainer Jillian Michaels returns and the rejected contestants learn they will comprise a secret black team!.