Each episode of this competition series drops four players into the Central American jungle for 36 hours, where they compete in various physical and mind-twisting challenges.
One of the players is actually the 'Snake', and has the job of trying to sabotage the others to prevent them from winning challenges. This is because each challenge win offers the team a clue to the identity of the Snake.
At the end, the players try to guess the Snake's identity. If they are right, the three of them split a $100,000 prize. If not, the Snake keeps all the money.