Legendary kayaker Scott Lindgren attempts to complete an extreme, unprecedented whitewater expedition 20-years-in-the-making. When a brain tumor derails his goals, he sinks into the darkness of his own trauma only to discover that healing, like any expedition, is not a destination but a journey.

When pro kayaker Rafa Ortiz decides to follow his dream to paddle over Niagara Falls, he sets in motion an incredible series of events that eventually takes on a life of its own. To prepare for this mission, Rafa enlists the help of world-renowned paddler Rush Sturges and a tight team of their friends. Together they go on a remarkable three-year journey from the rainforest rivers of Mexico to the towering waterfalls of the U.S. Northwest.