Marcello Rossi receives a letter from his mother, Mimi, announcing she will pay them a visit soon. Rossi has not seen her mother in a long time, and his memories of her are not very pleasant, so in the beginning he does not like her visiting. On the contrary, Edda and Anselmo, who initially were not very pleased about her coming, are excited after learning that Mimi is bringing a treasure for Anselmo.