After the death of his father, prince Tristan is living in Cornwall at the court of his uncle, King Marke, who treats him like a son. When the Irish king sends his son Morold over to demand high tax payments, Tristan challenges him to combat. He manages to kill Morold but is very badly injured, and is placed in a boat to be healed by the magic powers of the sea, which takes him across to Ireland.

Joan has succeeded in lifting the siege on Orléans and Charles VII has been ordained King of France. However, she is injured in her failed attempt to take Paris, weakening her position at court. When she is finally captured and put on trial, she finds both her life and the sanctity of her body at stake.

Antoine Saint-Just, comrade of Robespierre and youngest member of the Committee of Public Safety, is drawn into the tempestuous political & military conflicts of France under the Terror.