Romeo goes to clean Professor Casella's fireplace who, to thank him, gives him an illustrated book. However, Romeo cannot read, so the teacher offers to teach him to write his name. Upon his return home, he finds a letter left by the girl who lives in the same house, Angeletta. But, how will Romeo know interpret what is written on it?

Spring has fallen and Romeo's contract with Maestro Rossi is over. It is time for Romeo to say goodbye to Milan and return home in Sonogno. Some of his friends have already left, while others still have to stay a while longer. Professor Casella offers to drive Romeo and the other boys halfway to their home towns along with Bianca. Before leaving, they visit Alfredo's grave one last time, where they meet the Wolf Pack.