Shackleton's 1914 Antarctic expedition is trapped when their ship, the Endurance, gets stuck in pack ice. It is crushed nine months later. The crew camps on ice floes, floating north for five months, until they reach Elephant Island. Shackleton and five men then sail the 800 miles to South Georgia Island in a lifeboat to get help. The author, Worsley, was the ship's captain and guided the small boat voyage. A most remarkable journey, in which not a single man was lost, despite the unspeakable hardships.