It's the one hour mark, and thus time for a challenge. The contestants take a yellow school bus to a park, where Sami is waiting in front of giant spools of thread resting on matching platforms. If the contestants want to succeed, Sami tells them, they'll have to learn to unravel their problems. The teacher from each team will unwind 1,000 feet of ribbon through a playground. Students will then draw for which ribbon they'll have to untangle. Ah, I see. The first student to unravel their ribbon and get it back to the platforms wins. So the teachers have to weave a very tangled web. The team that wins will get immunity at the weigh-in, and the ability to switch the teacher and student of one team. So, they'll eff up someone's weigh-in. Freeze that in your Walgreen's ice pack and put it on your aching knee.

The challenge begins. I thought the spools were filled with actual thread, which would have been impossible. Instead, it's pretty wide ribbon. Nonetheless, this is going to be a really annoying challenge. The teachers put the ribbons over, under, and through with vigor and venom. When the teachers' time is up, Sam and Koli tell us that the ribbon they do not want to get is the White Team's. Michael has really knocked himself out in making someone's life miserable. The students then find out whose ribbon they'll be bringing in. And ha! It's their own team's ribbon! Blindfolded! Lance seems to think that his diving experience will help him here. Maria, meanwhile, wants to smack Michael upside his head and just says, "Backfire!" The teachers have to guide the students, but can't touch the ribbons or their teammates. Yeah, good luck with that, everyone.

The blindfolded students begin. Poor Darrell has vertigo, so is having a tough time with this. The Gray cousins seem to take an early lead, or at least have good communication. Things are hopeless for the Pink Team, both because of complicated ribboning and Sherry's general brainpower. Maria still wants to smack Michael upside the head. With half an hour passed, the Pink Team still is on their first obstacle. The White Team's ribbon causes problems for several of the other teams. Red and Gray are in contention for the victory, and despite the fact that Sam's instructions keep causing Koli to fall over stuff, the Gray Team wins! They get immunity, and Sami says they can tell her at the weigh-in which teacher/student team they're going to switch up.