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 -- the carefully picked team of eight shrinks to just three, leaving Tim, Royal Marine Baz Gray and sailor Paul Larsen to finish the job. Racing through a narrow weather window, and without a proper support team, they battle high winds, bad visibility, deadly crevasse fields and impossible climbs - even reliving Shackleton's famous glissade down the Tridents -- to finally reach their goal Stromness, and walk in to a hero's welcome.