Mysterious events are taking place near the castle belonging to the Duke of Sforza: bloody crimes are being committed, samples of the latest deadly weapons are being created, even some winged machines are flying... And only one person knows the answers to many riddles, and this is the great Leonardo Florinine, like everyone else name in Italy is da Vinci. It was thanks to him that the young man Dino, as Delfina della Fazia called herself, a girl who dressed in a man's dress to study painting from the greatest master, became one of the main characters in revealing secrets and mysteries. After all, she even had the opportunity to become the pilot of the first winged car in the history of mankind and fly around the castle of Pontalba.