Kelly Remington

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.

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.

White Collar castaways strip down and embrace their free-spirited "no collar" tendencies. Blue Collar castaways disagree when it comes to heavy lifting at camp, and one castaway struggles to adapt to her new tribemates.

A division of labor causes cracks in the hard-working Blue Collar tribe. Also, one castaway's strategy during the immunity challenge completely backfires.

One castaway struggles to fit in after a shocking tribal council. Also, winning a reward gives one castaway a new outlook on life and the game.