In high school, Olivia, Tracy and Holly had been known as The Godmothers, and their friendship has endured throughout the ensuing decades. Now, with the death of Olivia's husband, a wealthy Italian Count, and her return to America, the friends decide to reunite on a luxury cruise in the Caribbean. Along with Tracy's college-aged daughter and a two-man crew, they begin their journey uneventfully, enjoying the sun and the warm, clear waters of the Caribbean.