The premise: Four real-life couples (described by Fox as "unmarried but seriously committed") are put on an island off the coast of Belize, along with 26 attractive single people. During a two-week separation, each member of a couple selects three of the seductive singles for a series of dates.
As you can imagine, the guardians of morality are decrying it vocally, denouncing it as a sign of the decline and fall of Western civilisation. Which means it will probably be a smashing success. Perhaps they can do a follow-up show with Jerry Springer?