Despite the attempts of his friends and family to dissuade him from this dangerous adventure, Alex Honnold still dared to do so. The most eminent climber in the world, who is famous for his solo climbing, is preparing for his most daring climb. Alex will climb a mountain almost 0.5 miles (0.9 km) high. It will take place in Yosemite National Park. In case of success this climb will be one of the most significant in the history of climbing to the highest granite rock, which he decided to do without rope and other means of insurance... One of the most difficult tasks for the author's team was how to shoot "Free Solo Ultra HD" without any influence on the climb of the main character. When shooting the documentary, it was difficult to get sound from the climber who was too far away from the camera. There was no way to use wireless microphones. To solve this problem, the filmmakers used a recorder that could transmit a signal to the camera. The film was the second most successful documentary in the U.S. on box office returns in 2018, and the most popular in the UK in the year. The documentary was also awarded three prestigious prizes.