Joe Simpson and Simon Yates are good mountaineering partners, and they have challenged countless peaks together, this time the Peruvian Andes. After successfully reaching the top, on the way down, Joe had an accident and fell down a steep slope and broke his right leg. Simon held him tightly with a rope and retreated in the snowstorm. However, on the way, Joe unfortunately fell into the ice hole again, it was difficult for the two to communicate, and they were connected to each other by a rope. They may fall off a cliff and die at any time, and the two stiff people do not have enough food and water to tide over the difficulties. The knife in Simon's hand hesitated on the rope, and his tears were uncontrollable. What kind of hope does Joe have at the other end of the rope? will he survive in a desperate situation?