When a day hike for people 60 and older has to turn back midway through their hike in Sequoia National Forrest, the hiking leader finds himself at the base of the trail without his wife and without his former friend, both of whom had accompanied him on the trail. With the company of an over-eager widow, the man finds himself contacting search and rescue and waiting to see what morning will bring.

A party traveling west to California experiences unspeakable horror when they become trapped on an impassable trail in the winter.

While hiking with his wife and mother-in-law, a man stumbles upon the wrong guys.

A quarreling married couple takes a trip to the mountains in Colorado in an attempt to save their marriage, but disaster strikes when they see a pair of young mountain climbers fall, leading to a perilous rescue mission.

A backcountry guide in British Columbia generally turns a blind eye as his clientele traffic drugs into the United States — but he begins to realize that his newest clients are traveling with cargo far more dangerous than drugs.

While hiking with his two young children, a man falls to his doom in a cavern called the Bottomless Well, leaving his son and daughter to race to save his life.

A man accompanies two climbing experts up the Alps mountains. Though he decides to stay behind, the others continue without him in hopes of reaching the summit.

A woman descending Mount Everest watches as her fellow climbers begin to die around her and she wonders why she climbs the mountain in the first place.

A group of friends experienced in river navigation brave an infamously dangerous set of rapids, though some of them are more thrill-seeking than others.

When a couple with a strained relationship rides a motorcycle up a dangerous mountain in southern California, they battle for survival against nature and each other.