XVIII century. A provincial town near Venice. A middle-aged and seriously ill carnival mask maker, Kattina, receives an unusual order - to make an expensive and very elegant mask for a rich and noble gentleman. Kattina carries out the assignment with special care. Soon the craftswoman and her daughter Marietta move to Venice, and after a while the girl ends up at the Doge's Ball, where she meets a stranger... in the mask of Cattina. It turns out that under the mask is a young man from the powerful and influential Torrisi clan. And he already paid attention to the beautiful Marietta...