Daphne and Adrian take a walk, and Adrian says that he needs to get immunity. Daphne's, "Yep," says volumes. They both can agree, however, that Conda is a shit-starter. Cut to Conda, Mark and Kim talking about how they'd like to vote Adrian out. Cut back to Daphne saying that the Red Team drama has distracted Adrian a bit, but she's encouraging him to knock the haters right off his shoulder and lose some damn weight. Adrian tells us that he grew up hard, and this is a walk in the park. A park with a lot of shit talking.

With that, it's challenge time. The contestants head to a giant pool, where Sami, Bob and Dolvett await them. Sami brings up the excuse of the week -- "I can't lose weight on my own" -- and says that they're putting it to the test. The team who loses the challenge will lose their trainer for the entire week. No one is happy about this, obviously. The trainer of the losing team will, however, get to come back for the last chance workout. And then, ha! Sami explains that this challenge is an old-fashioned dunk tank. Each trainer will be suspended above the pool, and the teams have to try to keep their trainer suspended by holding onto ropes attached to a 241.5 weight. That's the average amount of weight lost between two teams. If any team member takes their hands off of the rope at any point, the individual is out, which of course makes it harder for the rest of the team to keep the trainer suspended. If a team lets go of the rope the weight will hit a target and the trainer will fall twelve feet into the freezing cold pool water. They couldn't at least heat the pool? Neither Bob nor Dolvett are fans of this particular challenge, and note that it's pretty scary to be on the end of a little platform twelve feet in the air. In other news, don't you feel like the best engineers of our generation are squandering their talents making needlessly complicated (yet still fantastically dull!) contraptions for Biggest Loser challenges?

The challenge begins. At five minutes in, everyone is holding steady. At ten minutes, folks are starting to have trouble. There is forearm burning and cramping, and while the Red Team's weight starts to drop a little, the Black Team weight hasn't moved at all. Cassandra invokes Bob's mantra of no chaos and no confusion, and Bob is proud. Sami asks Bob if he has swim trunks on underneath his pants, and it turns out that he does not. She then asks Conda if she'd like to see Dolvett fall. Sami is such a shit stirrer! It must be boring for her to just stand there through all these challenges. Anyway, Conda does NOT want Dolvett to fall. At 20 minutes in, Mark really starts to struggle. Dolvett thinks that if Mark goes, the whole team will go. However, the teams get to 35 minutes and are still hanging in there. Sami continues to heckle, as is her wont. The Red Team weight starts to drop, and then they all bicker about whose fault it is. Eventually, Kimmy lets go of her rope and the Red Team is down a person. And then at about 40 minutes, Mark is out, too. None of the Black Team members have let go of the rope, and Dolvett starts to get nervous. Soon, Buddy, Conda and Kim are out too, leaving only Adrian and Santa holding the full 240 pounds. And, yeah, that doesn't last for long. Dolvett hits the water, and we get to see it from several angles. The Black Team wins! Dolvett swims over to his Red Team, but instead of killing them gives them quick workout instructions for the week. He tells us that he believes in his team, and they're going to come out fighting.