Here comes treemail, but it's not what the ladies were expecting: this challenge is for immunity, not reward. That's a little early. Where is the car challenge? And if immunity is this soon, does that mean there's going to be a jury session that lasts, like, an hour and a half? Because that is no fun! I will pull a Kathy and quit right now, I swear to God. Cirie says that the only important thing going into today's challenge is that Natalie doesn't win, or else that will be the end of their Final Three alliance. Worst of all, Cirie would probably be the one going home instead, and that simply cannot happen.

Immunity challenge time! We see four poles with tiny platforms on them sticking out of the water. On the beach is a tall platform with rung-less ladders leading to the top. Probst greets the women with "four ladies, feeling oh-so-good about themselves," somehow implying that they have no right to feel this way. They totally do. I'm sorry your awesome, hot, strong men all got booted, Probst, but that doesn't mean the ladies who booted them don't deserve to be here. Probst takes the necklace back from Natalie and explains the challenge: players will stand on the pole and fetch as much water as they can from below using a bucket with holes in it. They will dump their water into what Probst calls a "bamboo shoot" but what looks to me like a plain old plastic tube. As the tube fills with water, a pole with keys attached to the top will rise up. Once it's within arm's reach, players must grab the keys, jump into the water, and swim to the beach, where they'll unlock a chest filled with individually-shaped ladder rungs. Each rung only fits in one spot on the ladder. The first person to assemble her ladder, climb to the top of the platform and raise her flag will win immunity.