Twenty returning castaways are dropped in the middle of theSouth China Sea to begin their adventure, on the special90-minute season premiere.The new season in Cambodia, themed"Second Chance," features 20 castaways from past editions whowere voted for by fans to have another shot at being named"Sole Survivor." For one tribe, old-school thinking battlesnew-school strategy when the two distinct groups try to takecontrol of the game. Also, one contestant finds a clue to ahidden immunity idol that requires retrieving it in a waythat's never been seen before.