Across the twentieth century, the United States built tens of thousands of dams, damming nearly every major river to supply water, hydropower, and flood control. This film follows the growing movement arguing that many of those structures have outlived their purpose and now do more harm than good, choking salmon runs and drowning canyons that once defined the American West. Fishermen, biologists, and river advocates make the case on camera, and the film spends real time on the Elwha River in Washington, where the Glines Canyon and Elwha dams came down in one of the largest dam removal projects in the country's history. Underwater footage tracks salmon trying to reach spawning grounds blocked for generations, while archival material shows the same dams being celebrated as engineering triumphs decades earlier. Produced by Patagonia, the film treats dam removal as a practical fix rather than a purely environmental gesture, arguing that some dams still serve their communities and others no longer do. It ends with rivers running free where concrete stood for most of a century.