In the city of Chicago in 1892, the rules for Victorian women are strict, their roles limited. But sisters Rebecca and Flora Hawes are not typical Victorian ladies. Their love of adventure and their desire to use their God-given talents has brought them to the Sinai Desert-- and into a sandstorm.

Accompanied by Soren Petersen, their somber young butler, and Kate Rafferty, a street urchin who is learning to be their ladies' maid, the two women are on a quest to find an important biblical manuscript. As the journey becomes more dangerous and uncertain, the four travelers sift through memories of their past, recalling the events that shaped them and the circumstances that brought them to this time and place.