The narrative opens in May 1537, amidst the tumultuous celebrations in Edinburgh for the return of King James V. and his young queen, Magdalene of Valois. The happiness of the court is contrasted by the deep-seated hatred between the crown and the proscribed noble families of Douglas and Seton. Sir Roland Vipont, master of the king's ordnance, returns from France deeply enamoured with Lady Jane Seton, whose family has long suffered under royal forfeiture and exile.
Despite the king's open hostility toward the Douglases, Vipont strives to balance his loyalty to his sovereign with his devotion to Jane. Meanwhile, Sir Adam Otterburn of Redhall, the lord advocate and a powerful state prosecutor, nurses a consuming jealousy and unrequited love for Jane. Otterburn's dark ambitions and political machinations lead him to plot against Vipont and the Setons, using his brutal henchmen to entrap the family.
The clandestine arrival of Jane's brother, the outlawed Earl of Ashkirk, further endangers the household, as he risks everything to see his family and his beloved cousin Sybil Douglas. The narrative develops through a series of escalating confrontations, secret meetings, and courtly pageantry, culminating in Otterburn's ruthless maneuverings to seize Jane and her brother. The intervention of powerful figures like Cardinal Beaton intensifies the political danger, setting the stage for a tragic collision between personal loyalties and the iron rule of state law.