The Brahmaputra, Karnali, and Colorado Rivers are fascinating for many river runners. Particularly, the Colorado River stands out as a unique stage where whitewater rapids unravel Earth's ancient history. Within its wild water, it stirs up cherished memories of a dear friend, whose passion for discovering the mysteries of great rivers inspired many of us. The documentary film Grand Canyon captures adventures of Slovak paddlers dedicated to follow their dreams. Rafting down many rivers and crossing canyons worldwide, they face their biggest challenge now – to raft down the Colorado River. Years of preparation have led up to this defining moment. They face the month-long journey in the canyon, immersing themselves in the untamed beauty of nature.