Anderson continues her story of two black children during the Revolutionary War, this time from the point of view of Curzon. It is winter, and the army is on the move to Valley Forge. Isabel is gone. The camp seems to have little by way of supplies. Can Curzon find Isabel, or, more importantly, can he survive the winter?

I don't think you have to read the first book in the series to understand this one, but it would give you some background information.