On November 14, 1944, the 2nd Ranger Battalion is tasked with sieging the German town of Bergstein, and Hill 400, a highly strategic position that provides the Reich with high ground for artillery.

Boundaries between parallel universes are collapsing, alter egos are slipping through the crumbling gateway. A ragtag group of misfits accept the mission of saving billions of inhabitants, armed only with a diary of a lunatic.