Two brothers go on a hike in Utah's Canyons. They expect the trip will take no more than 8 hours, but when freezing temperatures come, one brother breaks his leg and the other has to find help... and fast.
Five boat safari goers find themselves stranded in the hippo and crocodile-infested Zambezi River when their watercraft sinks due to a mad hippo. Three get stranded on a submerged sand flat in the middle of the river and the other barely makes it to the shore. None of them are protected from Africa's deadly wildlife.
A group of five teenaged scouts and three adult guides hike into the Grand Canyon during a heat wave. As their water runs out and the older members collapse in exhaustion, three of the teenagers must set out on their own to reach the Colorado River.