A company named Odyssey Marine Exploration searches the English Channel for lost treasure.

The Odyssey Explorer crew discovers a bronze ship's bell and tries to determine if it belongs to the treasure ship Merchant Royal.

Odyssey discovers a shipwreck that could change history.

Odyssey tries to recover one of the dozens of cannons found at the ``Legend'' site.

The Odyssey team explores a German U-boat and a World War I tanker.

U-boat expert Dr. Axel Niestle uses modern technology to piece together the stories of four U-boats and their final voyages.

The American owner of The Lusitania asks the Odyssey team to do an archaeological survey on the wreck site.

The Odyssey is on the hunt for a 19th-century English paddlewheeler, code-named Malta.

Odyssey finds the location of one of the most famous U-boats in history, U103.

Odyssey discovers a cargo ship on the seabed which may have contained a shipment of rare and valuable wine.

The Odyssey team has their eye on one last wreck before the winter weather makes it impossible to find.

The first season finale finds the crew embroiled in a legal battle Spain, over the cargo of gold and silver coins found on the wreck they call the "Black Swan."