Another tribe raids the Garlein tribe's food supply, vital if they want to survive the harsh winter(which is always).
Dolan says that they have to move to the root-lands, a fabled paradise to the south, which never knows winter and all plants grow, not just the stunted shrubs of the tundra(This is all Greece, which wasn't affected by the nuclear winter)
And the Garlein tribe begins trekking through the tundra on their way to the root-lands.
After a while they arrive in the