Count Olgierd Łabiński lives in Paris with his beloved wife, but their quiet life is disturbed by the arrival of Octavius de Saville, a former admirer of the Countess from her days in Florence. Obsessed with possessing her, Octavius seeks out Dr. Cherbonneau, a sinister figure dabbling in Eastern teachings of reincarnation. Through the doctor’s occult science, Octavius attempts a dangerous “exchange of souls,” scheming to inhabit the Count’s body and win the woman he desires.

After escaping across Europe from Stalag camp, Dolas's ride to Cyprus is stopped when his ship in sunk by an Italian submarine. Although he and some of his fellow sailors are rescued by an Allied ship, they find themselves conscripted into the French Foreign Legion in Beirut, Dolas becoming a cook.

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.

The life of the great Bolshevik leader before the Russian revolution is chronicled in this bio-pic. Much of the tale centers on his exile in Poland where Lenin becomes friends with two peasants. The little girl has a strong belief in the nationalist cause. Later Lenin hears she was killed for withholding information about him.

A doctor, though not having finished his studies, earns a living providing medical advice. A former nurse enters the stage, saying she hears voices from "the other world". At first, they can exploit gullible victims without problems, but soon the authorities begin showing in these quacks.