The year is 1499. The French are invading Milan and the Duke is going into hiding. What will Leonardo da Vinci do? Will he heed the advice of his good friend Luca Pacioli and flee the city also? Or will he stay and try to live in the same city with the likes of Cesare Borgia?

And once he has decided to leave, can he really bring himself to go to Mantua, and be at the mercies of Isabella d'Este?

Join Leonardo and Luca as they leave Milan and make their way to Mantua and eventually Venice.