A 220-mile trek across Nicaragua - and all 11 trekkers have a physical disability. Teamwork is the key - but just 15 miles in, there's an unexpected problem.
The team face bandit country, crocodile-infested waters and a seemingly endless trek in an unforgiving 40°c heat. But each of the participants is facing additional challenges.
At the close of the trek, the Pacific is almost in sight - but before the team swim in the ocean, they must climb Mount Concepcion, a 5,500ft live volcano.
The adventurers are beginning to really feel the strain. Horseback is the required mode of transport, then the team sail to their final challenge: to climb a 5,500ft live volcano.