Shirin Oskooi

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.

The 30th season will feature the first-time theme of "Worlds Apart," with castaways divided into the three separate tribes, White Collar, Blue Collar and No Collar. Minutes into the game, castaways are forced to choose between honesty or deception, and one castaway becomes ill after trying to satisfy his need for protein.

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.

Tribes drop their buffs in a switch that will shake up alliances. Also, one castaway struggles after receiving a blow to the head, and another castaway's desire to flex his power in the game could be his greatest weakness.