For the first time in the history of NBC's hit series "The Biggest Loser," the last nine contestants all get a trip home to see their loved ones in the middle of the season. It's a week filled with heartwarming reunions, real world temptations and tearful goodbyes when contestants must return to the ranch.

The competition heats up as only eight players remain. One team is surprised with a special trip to Las Vegas, but will they maintain their diets and workouts in Sin City, or give in to temptation? Then, in a very emotional elimination, one unsuspecting player makes the ultimate sacrifice for their team.

After revisiting the hospital to check in on their progress, the remaining players face off in one of the biggest challenges in Biggest Loser history -- they must fly across a ravine on zip-lines and collect flags. One player gets the chance to give immunity to himself or one of his teammates, and his decision ultimately affects his own fate. And a shocking announcement at the weigh-in changes the way the rest of the game will be played.