A young woman teaches commercial writing and makes her students practice by writing letters addressed to an imaginary recipient from Vienna. One day, the love letter the woman writes to this non-existent man is accidentally sent by one of her students –and falls into the hands of a real person.
The ordinary life of the prudent employee Mr. Travet accelerates as he and her wife meet his new chief.
Carlo Rutelli falls in love with the beautiful variety singer Yvonne la Nuit, but his father opposes the wedding. World War I breaks out and Carlo is killed while Yvonne has a son, but on orders from Carlo's father, she is told he is dead. Her career descends and only Nino, an art partner, remains close to her and helps her earn her living by singing in taverns.
