A village shop owner is convinced by his children to move to Prague, where they say he'll be able to enjoy a fine retirement in a modern furnished apartment. Bored by life in Prague with nothing to do, the old man takes to helping a young widow in her stationery shop.
When the yacht of her former lover Mario Tudor arrives in Split, widowed Countess de Milesi, plagued by financial troubles, is hell-bent on selling him a fake copy of an expensive painting.
In a country whose people have just been successfully persuaded of their superiority and the justification for military expansion by the fiery speeches of a dictator, the bacillus of a highly destructive form of leprosy has spread. It is called morbus Tshengi, or popularly „white disease“. The only one who has developed an effective cure for it is a physician of the poor named Galén. But he refuses to reveal the secret of his cure as long as the powerful destroy human lives through wars.