From the start of his life, Dietrich Fischer had always been a man with a hunters spirit, and hunting the most dangerous game for the Fatherland during the Second World War had only proven his skills to be lethally efficient. He had come to expect many things throughout the entirety of the war, but what he could not expect was to be taken from the war as it was ending, and finding himself in a land most bizarre, where the inhabitants are just that. "Alongside those who are sinful" is a story about Dietrich Fischer, a German Sniper. It is the story of a war-hardened man who finds himself tossed into an alternate universe in which his species does not exist. In humanities place are sentient, intelligent, and civilized animals. Dietrich must now learn to survive a new type of warfare in which he may not always be the hunter.

Humanity has fallen before the Anthro races. Twenty years of war has reduced the human population to drastically low numbers, severe enough to warrant the Anthro races to "reposition" their stance on humanity despite an almost fanatical unwillingness to surrender. A war for extermination turns into a rescue mission overnight. Enter Sako Squad, comprised of six highly trained spec-ops soldiers for the Anthro Military. They have been tasked to locate and capture a famous and notorious human resistance fighter only known by the alias of "Swan." They can locate him, but will they be able to endure the future and everything it will bring when they take him in?