The world renowned deep-sea recovery team, Odyssey Marine Exploration, sets out on a 90 day mission to recover the treasures from SS Gairsoppa and SS Mantola using one of the world's leading salvage ships, the Seabed Worker. While the company's flagship, the Odyssey Explorer plans to conduct marine archaeology on the HMS Victory, under it's lead archaeologist Neil Cunningham Dobson. The three part series is narrated by Mike Rowe, and follows the crews of both ships on their record breaking journey to recover 48 tons of silver bullion and attempt to protect and document the HMS Victory's wreck site before it is too late.