It’s do or die. Cassidy witnessed her father die in a brutal shark attack. Now years later, she must face her demons as her husband embarks on a dive expedition with friends. The dive takes an unexpected turn when the dive site becomes surrounded by sharks, and the survivors who make it back to the boat find themselves confronted by modern-day pirates. This is not the fun outing they expected. With sharks in the water and pirates making demands they fetch their cargo from the ocean floor, Cassidy must make some difficult choices but not everyone will get out of this situation alive...