Based on the book Working on the Edge by Spike Walker, Deadliest Sea tells the story of a young man who joins the crew of a King Crab trawler in Alaska seeking to make some real money. The captain of the vessel plays a hunch about where to set traps in the Bering Sea, but the boat and crew are soon victims of a powerful and relentless storm.

When a man living alone in the woods saves the life of a young woman, they are forced to coexist. Chaos ensues when the woman makes a terrifying discovery in the woods behind the man's home and unleashes something truly haunting.