When Luke arranged a deal for safe passage on a trawler he thought he had found a way to save his family. The skipper was an old friend who knew the ocean, and how to hunt. But there was something that none of them had encountered before, a terrifying creature from the cold depths of the ocean that rose up and killed mercilessly. The Megalodon was supposed to be a myth, a prehistoric relic consigned to history books. As Luke is stalked by the monster, he realizes that keeping his family safe is only the beginning of his problems. The hunters are about to become the hunted.