Nick Spitz is a New York police officer, and his wife Audrey is a hairdresser. Audrey wants to visit Europe, as Nick had promised at their wedding, but thinks they never will. After their 15th-anniversary dinner, Audrey confronts Nick, who lies that he has in fact booked the trip, and they set off to Europe. On the plane, Audrey meets billionaire Charles Cavendish, who invites the couple to join him on his family yacht for a party celebrating his elderly uncle's upcoming wedding to Charles' former fiancée. After seeing how crowded their previously planned bus tour would be, Nick agrees.