After Peter learned he was the rightful heir to the throne, he returned to Mirabeau to discover a tyrant had made himself king. When Peter and his friends, Sebastian and Alexandra, try to spy on the tyrant king, they are captured as traitors. It looks as if things will end badly for the three young people, especially when an invading army attacks the city, complicating the situation. In addition to all that, Peter has questions about his sword...