Can you trust your worst enemy? That is the question that twenty-eight vicious competitors will be asking themselves this season as they travel to the lush jungles of Costa Rica to compete in a thrilling new Challenge: Rivals. These fan favorites will receive the shock of their lives when they learn that their one and only teammate will be their biggest rival! In order to win, these arch-enemies must figure out how to overcome their rocky pasts and compete together for a jaw-dropping grand prize. Over $300,000 is at stake, and these bitter rivals will fight tooth and nail in order to get their hands on a cut of the cash!