Ripped from their first location, participants must start over in another extreme ecozone; Luke battles caimans for supremacy of the wetlands; Lindsay searches for water in 105-degree heat.

The second location takes a mental toll. Lindsay makes a fateful decision. Caimans hunt Luke in the Wetlands. Shon's struggle for food pushes him to the brink. On the island, Adam fails to make fire and suffers the consequences.

Shon's fate is decided. The Wheel sends the participants to Phase Four. Lindsay's hopes are dashed by the barren Tundra. Adam forages in the Wetlands, but is wrecked by caimans. Luke faces the ultimate mountain challenge.

It's do-or-die when Lindsay finishes her rations. Adam has a breakthrough, but the Wheel turns to Phase Five. Luke hopes to catch the first Tundra fish, while Adam's fishing net comes unraveled in the Bush Plains.

As Day 60 approaches, the final Wheel turn sends Luke to the island where relentless rain has crushed two participants. Bruised and starving, Adam heads to the brutal cold of the Mountains.