In the first of two special Hawaii episodes, the remaining six contestants are off on the adventure of a lifetime to the breathtaking island of Kauai. There they'll continue the competition and do everything they can to avoid falling below this week's red line. They start their trip at the scenic Waimea Canyon State Park before the trainers put them through an intense workout at Polihale beach. Then, in a Hawaii-style challenge, they all hop into kayaks and paddle out in the ocean to retrieve a bag of puzzle pieces. The finished puzzle reveals the prize for the winner - an incredible, private helicopter tour of Kauai. Later, one trainer and a contestant face their fears together about the open water and try snorkeling, before all the contestants arrive at the beach weigh-in in outrigger canoes to determine who is going home - and who gets to stay in paradise for another week!