The novel represents Tolstoy's adaptation of Pinocchio by Carlo Collodi; he got the idea for the novel as a child, when he was read only the first part of the book, so he invented the rest himself.
A picture book about a little musician octopus who travels the seabed and searches for an instrument whose sounds will fill her and make her happy. After she finds him, her music and musical instrument delight the inhabitants of the undersea.
Warm stories about the life of Jesus told by his disciple Simon from Capernaum. About the Resurrection, John the Baptist or about the voice crying in the desert, about casting nets and healing Šimun's mother-in-law.