The film chronicles a group of explorers, the Corps of Discovery, led by Meriwether Lewis and William Clark into uncharted territory to find a water passageway to the Pacific Ocean and describe for science the wonders of the West. The expedition encountered and conquered an endless series of physical challenges as they traveled through raging rivers, buffalo-filled prairies, sub-zero temperatures, and rugged mountains on their 8,000-mile journey to the Pacific Ocean and back. The generosity of Native Americans in helping the explorers is detailed, including the story of Sacagawea, a teen-aged, Native American girl who accompanied the group and whose contributions were invaluable to the success of the expedition.

Length: 40:00