Peter Claire is an English lutenist summoned to Denmark to join King Christian IV's royal orchestra. Designated the king's "Angel" because of the purity of his physical beauty, Peter falls helplessly in love with the lovely companion of Queen Kirsten, the king's adulterous wife. The young musician finds himself dangerously torn between loyalties, ensnared in the deep-seated unrest of a royal court where the forces of good and evil, of harmony and dissonance, are ensconced in a battle to the death.