A scientist falls into a crevasse in the Himalayas. Badly injured, he must climb out alone or die. A man plummets to earth in free fall when his parachute malfunctions, and a woman almost drowns after being dumped from a raft in the Colorado River.
An avalanche buries a skier, and rescuers race to free him before he suffocates. A kayaker is chased to the beach by a frenzied hammerhead shark, and a near-death experience is caught on camera as a plane ditches into the sea.
A kayaker gets caught in a raging torrent during a flash flood on a South African river. A solo sailor fights for his life while adrift in the middle of the North Atlantic, and a frightening light plane crash is caught on camera.
In Hawaii, a spear fisherman gets an unwanted visit from a 13-foot tiger shark and catches the incident on his head-mounted camera. In Australia, two young divers find themselves in a life-or-death encounter with a giant great white.
A man saves his best friend's life when he blacks out underwater while spearfishing. Climbers fight for survival after being swept off a mountainside by an avalanche, and two joggers are chased by a black bear in a Canadian forest.
A snowboarder gets trapped for an hour under six feet of snow. A drone captures a terrifying flash flood in Maui, and youthful high jinks go terribly wrong, leaving friends injured and trapped on a Utah mountainside.