Byron and Cheyenne are spending a month with friends from college this summer. They all pitched in to rent a hundred-foot yacht off the coast of Watermelon Cay in the Caribbean. On their first night, a hilarious escapade of Truth or Dare leads them both to bewildering encounters that ignite a strange arousal. Their love life has been fine. It's not like it's been lacking. But there's something provocative about the hedonistic camaraderie with their friends. As the next day unfolds and exhibitionism becomes acceptable, the stakes are raised. Both Byron and Cheyenne are presented with opportunities they hate to find so bedazzling. Exhibitionism is one thing, but when another couple extends an offer, would they be crazy to accept it? Or would they be crazy to turn it down?