Thor Heyerdahl’s book about the Kon-Tiki 5,000 mile voyage in 1947 from Peru to Polynesia by raft, sold more than 50 million copies. This film explores Thor’s fascination with the idea that the Polynesian islands were populated from South America. There are thrilling scenes at sea: a powerful storm, a close encounter with a whale, an attack from a shark and a deadly reef to negotiate.