It's the big 3-0. To celebrate, Samantha Silver decides to take three friends from New York City on a Caribbean vacation. Their days are spent snorkeling, scuba diving and just hanging out, but they begin hearing a rumor from the locals about a creature in the water. The story seems too horrific to be true. They do their best to dismiss it and enjoy their trip, but then people begin disappearing. Are the rumors actually true? Stories about treasure and sea monsters are for kids, right? Take a vacation with Sam, Macy, Jessica, and Chad off the shores of Hispaniola and experience the underwater terror that is "Devilfish."