James Cook journeys from life as a barefoot farm boy to commanding his own ship on one of the British Empire's first great scientific expeditions. Influential patrons help the bright boy to an apprenticeship in the merchant navy that would make him a ships' master. But with an eye for the main chance Cook switches to the Royal Navy. War with France propels him to Canada, where he discovers his life's work. He revolutionises the accuracy of naval mapping and the way the world is recorded. In further adventures, his genius for precision navigation helps Britain win the war and control of North America. Cook's reward is command of the great scientific expedition to the Pacific Ocean and the newly discovered exotic and sexually liberated Tahiti to record the 1769 Transit of Venus. When the observation is complete, Cook opens secret orders and learns he is to solve one of the world's great mysteries. He must find the Great Southern Continent. The real challenge has just begun.