Expedition twists, twines, and collides with time as two epic journeys are played out across the American continent. In 2014, two young men struggle to sustain a relationship in the face of distance and change; in 1804, Lewis and Clark embark upon an expedition to cross the continent and reach the Pacific coast. Whether confronting old taboos or forging new alliances, both partnerships tackle American history in the making, charting a difficult course for territory that is both promising and terrifying.