When newlyweds Laurel McKay and Tom Hunter embark on their honeymoon cruise, they look forward to sunny days exploring the Caribbean islands and intimate evenings together. Their dream quickly goes "poof," when Laurel's family decides to tag along and their romantic duet turns into a party of eight.
The first night on the ship, Laurel witnesses someone going overboard. But no one is reported missing, and the chief of security gives Laurel's sighting the same credibility as an alien landing.
After a series of diamond thefts, Laurel discovers that suspicious shipmates are as plentiful as calories on this cruise. When a murder occurs, and a family member becomes the top suspect, Laurel is determined to unmask the killer before her dream honeymoon becomes a nautical nightmare.
