Leonardo da Vinci's longing for flight leads to a mysterious ancient book, a dangerous alchemical experiment, and a violent accident.
It is left to Leonardo's friend, Tomasso Masini to attempt a rescue. But the only person he can trust is Leonardo's servant, Marta.
Clever and strong, Marta can help Tomasso in ways he cannot imagine.
But Marta wants nothing to do with this man who represents the life, and love, that she, a poor spinster, will never have...