Abigail's brother, Jacob, now a young man, is attempting to discover his own place as a Christian. He is concerned that being more serious about his faith means trading away the exhilaration of his current profession as a caravan guard. Hired by Julia's father to protect the wealthy merchant's caravans on the secretive "Frankincense Trail"-undercover transport of this highly valuable commodity- Jacob also passes letters and messages between various communities of believers. He is alarmed to find out that Julia, hardly more than a girl, is also a messenger. Can their immediate mistrust be put aside to finally bring their hearts together?