Kevin Costner explores the vast wilderness of Yosemite National Park while diving into the incredible story of Teddy Roosevelt's 3 day camping trip in a blinding snowstorm that changed America forever.

Kevin Costner retraces the journey of Teddy Roosevelt and John Muir in Yosemite as he explores the tragic and triumphant life of the man behind the American conservation movement.

The rivers of Yosemite once ran red with blood as the sound of gunfire echoed from the canyon walls. In the final episode, Costner immerses himself in the legendary story of the battle for Yosemite.