The hidden city inside the mountain is within reach but exploration means convincing locals for help. Temperatures drop to 40 below, threatening ranchers trailblazing the frozen tundra, and an emergency meeting is called to defend the frontier.

In the dying days of winter, McCarthy locals join forces to survive wolf attacks and starvation, but the plan to open the frontier to the outside world turns residents against each other when locals night at the golden saloon turns into a free for all.

The great Alaskan breakup fractures McCarthy. Food is lean for man and beast so locals combat hungry wolves stalking their herds. A last chance treaty between supporters of the new and old goes up in flames. Tim closes up his cabin atop the summit.

As the battle for McCarthy wages on, a team of experts works to locate the only known entrance into the Mother Lode mine. Locals fight to break free of Neil’s stranglehold on the town by casting their own ammo.

Neil defies both nature and locals by developing his mine tour. However, a line is drawn in the sand after his secret construction project is discovered. Meanwhile, tragedy forces one of McCarthy's best to fight for their life.