Robert Skibicki

The hungry castaways are given $500 apiece to enter into an auction, where food is the most sought-after commodity.

The first reward challenge is a sumo-style competition; the castaways face the reality of having to catch their own food.

As physical strength begins to fade, strong alliances may be the competitors' only hope for success in the challenges.

After weeks spent in isolation, even some of the strongest competitors begin to struggle, while others start to plan their big moves.

It's been a long 50 days, and the finish line is in sight for the final three contestants - but not before competing in one of the toughest battles yet for a shot at Immunity.

After losing an endurance challenge and, with it, a chance for immunity, one team enters into what might just be the fiercest tribal council yet.