Survival doesn't have to be lonely...
Jake, Billy, and the other survivors have come to settle in the mountains of Wyoming, fighting day in and out to establish a home for themselves in a near-empty world. Things are good at first-well, as good as they can be after the apocalypse.
Scavenging is a workable, short-term solution, but they know it's only a matter of time before the food runs out. A sustainable solution must be found and for a handful of people up in the mountains, the odds don't seem favorable.
They get even worse when a new band of survivors migrates to the very same mountains, desperate for a place to settle. Jake can't refuse them a home and shelter, but a growing commune means more hungry mouths, which means more sacrifices, and more people to learn to trust.
As resources run thin, the world grows colder and more brutal. Survival might just depend on how violent they're willing to get...