Freed Polish soldiers are trapped in a small town in Germany during the last days of World War II. After a doctor's daughter is raped by a concentration camp worker, the Poles allow her and her father to stay in the house that is their temporary quarters. While waiting to be repatriated, the war-weary group is forced to fight some German soldiers who invade the town. The war brings out conflicting emotions of the Poles who find themselves trapped in the house and once again under fire from the enemy.

As New York City is invaded by alien creatures who hunt by sound, a woman named Sammy fights to survive.

Hungarian physicist Leo Szilard leaves Europe, eventually arriving in the United States. With the help of Einstein, he persuades the government to build an atomic bomb. The project is given to no-nonsense Gen. Leslie Groves who selects physicist J. Robert Oppenheimer to head the Los Alamos Laboratory in New Mexico, where the bomb is built. As World War II draws to a close, Szilard has second thoughts about atomic weapons, and policy makers debate how and when to use the bomb.

In the exact moment they hit rock bottom, four strangers are visited by a mysterious man who gifts them a week to see how the world would be without them.