A group of 15-year-old boy scouts set out on a tough hike in a remote part of the Grand Canyon.
Caught in a heatwave, their water is quickly exhausted. Now they're in a race against time and the elements to reach the Colorado River.
In a last-ditch effort to find water and save themselves and the group, three boys strike out alone.
But after they survive a tough trek and an almost impossible climb down a 200-foot cliff, the river is within sight, but do the boys have the energy to make one final push to reach it?
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