After 5 people win a rafting trip down the Colorado in Utah, their adventure takes a deadly turn when they camp off the river for the night, and find out they aren't the only ones out in the remote rugged canyon lands. 　　译文(2): 5个人在犹他州的科罗拉多河漂流旅行中获胜后，他们的冒险经历了一个致命的转折，当他们在河边露营过夜时，发现他们并不是唯一一个在偏远崎岖的峡谷地带的人。