Monkeewrench founders Grace MacBride and Annie Belinsky, along with Deputy Sharon Mueller, are driving from Minneapolis to Green Bay, Wisconsin, where they believe a new serial killer is just warming up, when their car breaks down, deep in the northern woods, far away from civilization and cell towers A walk through the forest leads them to the crossroads town of Four Corners, where they had hoped to find a landline and a mechanic, but instead find absolutely nothing