"The SS Arcadia vanished during a routine voyage. A strange, garbled emergency message was broadcast, but no trace of the ship, or of its crew, could be found. Sixty years later, its wreck has finally been discovered more than three hundred miles from its intended course. A small team are granted permission to dive to it. Their purpose is straightforward: explore the wreck, film everything, and, if possible, uncover how and why the supposedly unsinkable...