Given the question: Build a movie plot around this: How did Cyril die? He fell into the nitro explosion below him.
The answer is:
While climbing in Monument Valley, siblings Peter (O'Donnell) and Annie Garrett (Tunney) lose their father, Royce (Stuart Wilson). After two falling amateurs leave the family dangling, Royce forces Peter to cut him loose to save Peter and his sister. Peter has since retired from climbing, becoming a full-time wildlife photographer, and Annie has gone on to become a renowned mountain climber. Their relationship is strained as Annie still blames Peter for obeying Royce instead of waiting for her to secure the rope. Three years later, during a wildlife photo shoot for National Geographic in the lower Himalayas in Pakistan, Peter's assistant falls and breaks his leg and has to be evacuated by the Pakistani Army stationed in a military station that monitors avalanches. Peter is dropped off at K2 Base Camp and searches for Annie who is planning a summit attempt on K2, the world's second highest and most dangerous mountain. The expedition is funded by wealthy industrialist Elliot Vaughn (Paxton) who is also taking part as he wants to attempt climbing the K2 for the second time after his first attempt ended in tragedy with him as sole survivor. Vaughn has the help of renowned climber Tom McLaren (Nicholas Lea) and other expedition members include Pakistani mountaneer Ali Nazir.The day before the climb Vaughn throws a promotional party with all the people at base camp that is interrupted by reclusive Montgomery Wick (Glenn), reported to be the world's best climber and foremost expert on K2, who asks if it will be Vaughn or the experienced McLaren who will be making the decisions during the climb, as the team cannot have two leaders. Vaughn states that McLaren is the leader and later on explains that Wick is against him because his wife, a Sherpa guide, was one of the people who did not survive his previous expedition. During that climb, they were hit by a storm and got lost in the mountain and Wick's wife died of pulmonary edema on their way down because she forgot her supply of dexamethasone, the only medicine...