Dave and Ronnie should be happy with their family, even if they've fallen into a routine. At the urging of their friends, they head off to a tropical paradise for a couple's retreat to bring spark back into their marriage. They're joined by two other couples with whom they are friends, including Joey and Lucy who are facing divorce. The retreat is finished off by a friend, Shane, and his rebound girlfriend after a separation from his wife. The couple's therapist seems intent on convincing the pair that their happy marriage is anything but, while their friends suffer from real problems such as infertility. The movie follows couples and, finally, the men versus the women. It's their adventures that help them realize what matters most.