Seven regular people with superhuman skills take on the ultimate adventure challenge -- an obstacle course so brutal only nature could create it.
The six remaining contestants must conquer natural obstacles along the coastline. They will have to traverse gigantic trees, bodies of water and treacherous cliffs to move on.
The challengers face their most brutal test yet. They'll need to scale steep terrain and overcome dangerous natural obstacles in a race to the summit of Watt Mountain.
In their last challenge, the final four take on Dominica's canyons. After encountering waterfalls, pitfalls and volcanic lakes, they'll finish with a sprint to the top of Witch's Hat, the island's tallest peak.