Jeff asks the castaways what they found when they got to camp. Big Tom is all, "Nuthin'." They all acknowledge that they did get a machete and a bucket/pot, but that's it. Oh, and the map to water. Rudy tells Jeff that they can't drink the water yet, because they don't have fire. Nobody has fire, they all learn -- not even Mogo Mogo, even though Jeff openly says he's sure Hatch's team has fire by now. "So as Rudy says, the water's of no value," Jeff says. "Weeeeell," Amazon Rob interjects, and there's a great shot of all the Mogo Mogo heads turning at once to look at him. Sue says that she drank it. Jeff darkly turns to Rudy for a verdict on whether that's okay to drink the water, obviously expecting him to give an ominous warning. "Yeah," Rudy says. Everyone laughs, including Jeff. "So is it wise because it's the other tribe?" Jeff asks, touching his forehead. "Yeah," Rudy says. Snerk. Awesome. It's so good to see guys like Rudy again -- guys who are funny by accident, rather than an endless stream of Jons trying to be funny on purpose, which never works.
Jeff explains the challenge, which is a version of the old "Quest for Fire," the first challenge they ever did. Each team starts on a floating platform. The players then dive down to release a raft by unfastening two clips. They then take torches found on the raft and use them to light a series of "woks" (is that right?) found on the way back to the beach. When all the woks are lit, they drag the raft up on the beach, and then they have to pass the raft and all the team members under a low platform. After they get under the platform, they light one more wok and hit the mat. The first two tribes to finish will both win immunity. The immunity idol, predictably, is a two-part statue, because two teams win immunity. Surprisingly, Jeff feels obligated to explain what winning immunity means and what tribal council is, which...yeah, Jeff. Just get on with it. They've all explained this to their grandmothers a hundred times. The contestants all swim out to their platforms.