As soon as Rosalie and Leo return to Munich from a trip to Florence in 1478, a new problem arises before them: a powerful magical artifact of the Order of the Rubies has been stolen. Of all the possible people, the masters of the order considered Rosalie to be guilty. And when she does not receive support even from her lover, the girl decides to find the culprit on her own. Finding herself in Rome in the 16th century, Rosalie learns that the life of the great Leonardo da Vinci is in dire danger, because Lucian Morell will not stop until he changes the usual course of time, and resist Rosalie owes him alone. The girl discovers new abilities in herself, and now the passage of time and the fate of the world depend entirely on her...