The Diary of Paris is a children's book for young readers. It is the story of Paris, a mouse, as told by himself. He lives in a country house and befriends its owner, a kind professor. In his nightly outings, Paris gets acquainted with other mice, street mice, and he gets to see different aspects of life. He likes children, and he dreams of opening his own school for young mice one day. His life becomes happy and meaningful when he meets Sarah, a single mouse mother, and they decide to live together as family, in the countryside, where they will be able to fulfill his dream, to open a school for little mice.