Twenty returning castaways are dropped in the middle of the South China Sea to begin their adventure. The new season in Cambodia, themed "Second Chance," features 20 castaways from past editions who were voted for by fans to have another shot at being named "Sole Survivor." For one tribe, old-school thinking battles new-school strategy when the two distinct groups try to take control of the game. Also, one contestant finds a clue to a hidden immunity idol that requires retrieving it in a way that's never been seen before.

One Tribe is completely puzzled at a classic immunity challenge. Also, one castaway attempts a heartfelt apology in an effort to stave off elimination before an intense tribal council.

Just days into the game, castaways drop their buffs and switch from two to three tribes. Also, a castaway's future in the game is in jeopardy when they're caught sending a message to another tribe.

Three castaways leave it all on the beach in a gut-wrenching challenge, and two castaways plead for their lives in the game at a heated tribal council. Also, Abi-Maria continues to ruffle feathers with her tribe.

One castaway embraces a new, more personal style of play for his second chance. Also, one castaway risks ruining a good thing by going against her own alliance.

One castaway is pulled from the game due to a family emergency. Also, Tribes drop their buffs and switch it up for the second time, and castaways chow down on local delicacies in a classic immunity challenge.

Thirteen shocked castaways come together for the largest merge ever. Also, history repeats itself for two feuding castaways, and the season's first individual immunity challenge is a classic game of balance.

An intense water challenge leaves castaways thirsty for a much-needed reward. Also, immunity hangs in the balance as castaways attempt to steady themselves, and a shocking Tribal Council takes an unexpected turn.

One castaway risks their safety in the game in order to gain an advantage. Also, another castaway steps up in a brutal individual Immunity Challenge to further their game, and three castaways deemed the “Witches Coven” stir the pot at camp.

Back at camp, Jeremy reiterated to Spencer that he would have saved him as he did Stephen, but Spencer was uncertain.

Emotions run deep when loved ones visit the island, and a desperate Reward Challenge leaves castaways’ heads spinning. Also, exhaustion takes a serious toll on one castaway in the middle of an immunity battle.

With the end in sight, castaways scramble to solidify a plan for the final three. Also, a frightening incident at the Immunity Challenge sends shockwaves through the entire tribe, and castaways are rewarded with a spiritual recharge at the temples of Cambodia.

Six castaways battle it out for a shot in the final three, and a shocking Tribal Council delivers a Survivor first. Later, the final three castaways plead their cases for the $1 million prize.

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