Earth, 2308. Multiple pandemic plagues have ravaged the earth beyond recognition. Working desperately, the Philadelphia National Archives uses a mysterious time machine to bring key members of the past into the future, to save humanity from destroying itself.

Pulled from Renaissance Italy, former peasant Benedetta brings a friendship with master artist Leonardo da Vinci . . . and an unprecedented ability to change destiny, aided by her new partner, the Viking Ivar. But it is not easy to reconcile the past and the present, and the time refugees have their own plans for their new...