Isabella, Princess of Poland, is raised to a life of great wealth and leisure in the Polish Royal Court, destined to marry a king. But fate or divine providence intervenes when she meets Johan Hirschberg, a young Anabaptist who works in her father's stable. This chance meeting leads the young couple into a forbidden love. Together they flee Poland and embark on a dangerous journey that brings them, after great peril, to the small parish of a troubled priest named Menno Simons. Catholic Bishop, Franz von Waldek, paid by King Sigismund, Isabella's father to find the princess at all costs, pursues them across Europe. Isabella does not know it, but if von Waldek captures her, she will have to make a choice that will change the course of European history forever.