Brett is psyched that the Unknowns are heading to the ranch this week to train with the other players. This also the first week Brett and Cara's team is up for elimination if anybody falls below the yellow line.
Bob knows the pressure that his team is facing with the Unknowns coming back on the ranch. So, he puts his players through one of his famous fitness circuits outside.
Jennifer and Jay return from the Unknowns' location and are ready to weigh in the rest of Bob and Jillian's team. They both have a successful week, losing six pounds and nine pounds each. But, the Green Team agrees that they are still happy they stayed on the ranch instead of choosing the mystery trainers and immunity on day one.
It's time for Irene and Ron to each weigh in. The players are shocked to see the both of them have gained weight. Irene says she gained the weight for her team. She knew Don was ready to go home, so if she put both of them below the yellow line, he would be eliminated. Don admits he gained the weight because he was ready to go home.
Ali tells the players that she usually gives the players an hour to deliberate whom they should eliminate but has an idea the players already know who should leave the ranch. The players all vote to send Don home and he is on his way.
Ali gathers the players outside to greet the Unknowns. Bob and Jillian's players immediately notice that the returning players have lost a significant amount of weight. Ali gives the on-campus players a challenge. Last week they lost a total of 48 pounds; if they lose more than that this week, they will all have immunity.
Brett and Cara are also coming to the Biggest Loser ranch for the first time. Both trainers admit they are a little intimidated by the legacy Bob and Jillian have created. The at-ranch players witness the Unknowns train with Cara and Brett and know they are in for some competition.
This week's challenge involves each team taking weights and putting them on other players' scales. Once a team has 500 pounds on their scale, they are off the challenge. Immunity is the grand prize, something that all the players can use this week.
The Yellow Team wins the challenge and celebrates with the other Unknowns. Bob and Jillian's teams realize that the Unknowns are a force to be reckoned with. Meanwhile, the Yellow Team is feeling guilty for winning the challenge because it's the first time they've won as an individual team and not as an entire group.
The weigh in begins and the campus team loses a total of 63 pounds, saving their entire team from elimination this week. They all celebrate their weight-loss numbers. Now it's time for the Unknowns to get on the scale and weigh in.
The Unknowns weigh in and each of them celebrate big numbers. Unfortunately, even though the Red Team lost in the double digits, it's not enough to save them from the yellow line. It is now up to the Unknowns to eliminate Q or Larialmy .
Q and Larialmy each explain their reasoning for falling below the yellow line. Q pleads with Larialmy to allow him to stay on the ranch. Each of the Unknowns face a tough decision on who to eliminate. The Unknowns make Q promise that he'll give a hundred percent if he stays on the ranch, and he does.