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Polar explorer Tim Jarvis is on a mission to discover what happened on the most famous survival story in history - Sir Ernest Shackleton's Discovery Expedition.

In a tiny replica wooden lifeboat, with 100-year-old equipment, clothes and rations, the team of six men battle 800 miles across the roughest ocean on the planet.

Following the successful sea crossing from Elephant Island, Tim Jarvis must now traverse the mountains of South Georgia to complete his re-enactment of Shackleton’s “double.” But injury, illness, and bad weather are against him.