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To save his town and solve a legendary mystery, Adak's Mayor Thom assembles a crew of specialists to find pirate Gregory Dwargstof's remaining treasure.

Salvage experts Jay and Burke design blast shields to deal with an unexplored bomb. Geographer Dr. M and tech expert Brian open up a new search zone.

With their main digging site shut, Dr. M and Brian retrace Dwargstof's steps to locate a new target area. Later, the team digs up something shocking.

Dr. M gathers more details on their recent find and analyzes soil samples with Brian. The search narrows down to an area underneath an abandoned house.

While Jay and Burke join Thom to search the tundra pits of Lake Betty, Dr. M and Brian set up camp at the Bay of Waterfalls and run into trouble.

The crew details more of Dwargstof's criminal activity. Jay, Burke, and Thom continue to follow the footsteps of a fellow treasure hunter at Lake Betty.

Off-limits for months, the team's most promising site is now open to search. The crew discovers mysterious stone markers that become valuable clues.

As a monster storm approaches, the team's short on time to unearth what they can before the freezing temperatures end their search until next year.