A mysterious man, who had lost his memory, arrives in San Marino among other refugees during the Second World War.
Alberto, son of a rich engineer, falls in love with Luisa, a ruthless manicurist who is only after his money. His parents offer him a holiday in Venice because they hope he will forget her. Alberto however leaves for Venice with Luisa, who has asked a friend of hers to take her place at the beauty parlour. Alberto's parents go there and mistake Teresa for Luisa. A series of misunderstandings ensues...
