The Second World War has started, pitting the Allies against the Axis Tripartite. The United States and the Soviet Union refuse to enter the war, and by early 1941, Britain stands alone.

In the middle of the Atlantic Ocean a great flash of light is seen by a crew of Germans on a patrolling U-boat. The appearance will not only shift the course of the war, but it will change the course of human history.

The question is: Will it be for the better or for the worse?