Castaways embark on the most grueling 39 days in Survivor history and test whether brute strength, looks or smarts will be the attribute that helps capture the title of Sole Survivor. Also, one castaway deals with excruciating pain when a bug gets stuck in their ear.

One castaway goes to great heights to retrieve an idol, and on the beauty tribe, two castaways become quick friends. Also, immunity and rewards are on the line at a taxing physical challenge.

For the first time ever, two immunity idols can join forces to become one super idol that can be used after the votes are read. Also, one castaway gets crafty in order to retrieve an idol and another castaway on an opposing tribe may have a bounty on their head if they can't find an idol.

The brutal heat of Kaoh Rong takes a toll on several castaways, and one is medically evacuated from of the game.

The castaways drop their buffs and switch things up, and one castaway feels all alone in the game following the tribe switch.

A hearty food reward is up for grabs at a classic challenge. Also, the pressure is on when one castaway interrogates a fellow tribemate.

A tribe merge reshuffles the game and its alliances. Also, a brutal individual Immunity Challenge keeps castaways on their toes.

The merge creates a power struggle between the remaining members of the Brawn and Beauty tribes. Also, rumors of an all-girl alliance cause problems for one castaway.

A separation in tribes leads to the ultimate sabotage. Also, a schoolyard pick draws a line in the sand at a tough Reward Challenge.

A surprising turn of events at Tribal Council sends shock waves through the entire tribe. Also, castaways must choose between food, love or an advantage in the game.

One castaway holds the key to individual immunity and guarantees themselves a shot at the final six. Also, after a shocking Tribal Council, a fractured alliance may not be able to be restored.

A combination of balance and teamwork will earn some castaways a much-needed reward. Also, one castaway is under fire after bossing others around.

One castaway struggles to overcome feeling betrayed by their strongest ally. Also, an indulging reward might wreak havoc on one castaway.

The castaways reunite in Los Angeles to discuss the season. Jeff Probst hosts.