The harsh reality of winter sets in, and the Keefer brothers are forced to sleep with one eye open as a grizzly patrols the area around their camp. The brothers are at a distinct disadvantage in the dark, limited to the light of their fire. After a night of little sleep, they try to stave off the effects of sleep deprivation, which in the wilderness could lead to injury or death.

The harsh reality of winter sets in, and the Keefer brothers are forced to sleep with one eye open as a grizzly patrols the area around their camp. The brothers are at a distinct disadvantage in the dark, limited to the light of their fire. After a night of little sleep, they try to stave off the effects of sleep deprivation, which in the wilderness could lead to injury or death.