Twenty winners of "Survivor" return to compete against one another for a prize of $2 million.

One castaway is out for blood after realizing an ally was sent to the Edge of Extinction.

New-school players attempt to take control against the old-school players.

Castaways are on the edge of breaking down when faced with a grueling opportunity.

Tribes drop their buffs and switch things up; tension in one tribe creates alliance opportunities.

Some winners sprint their way to an opportunity to gain an edge over the other castaways.

With the old-school players living on Edge of Extinction, it’s merge time for the new-school castaways.

Things get tense for the castaways during a chaotic tribal council; a taxing immunity challenge.

Contestants have moments with their loved ones; the 12th person is sent to the Edge of Extinction.

Alliances threaten to crumble; an undercover operation escalates to new heights.

Alliances threaten to crumble; an undercover operation escalates to new heights.

The remaining seven castaways make their final push toward the $2 million prize.

Winners battle it out, but only one is crowned Sole Survivor and takes home the $2 million prize.