Saddled with debt, the Prince of Wales is promised financial support from his father, the reigning King George, only if he marries his coarse and vulgar cousin, Caroline of Brunswick, despite her many faults.
The marriage is a disaster from the very start; her efforts to achieve a semblance of grace and majesty fail miserably, and George has no qualms about flaunting his ongoing relationship with Frances Villiers, Countess of Jersey in front of his wife.
The two formally separate after the birth of their daughter Charlotte, and George reunites with Maria Fitzherbert, whom he had wed years before meeting Caroline.
Efforts to strip Caroline of the title of queen consort and dissolve her marriage by accusing her of committing adultery with commoner Bartolomeo Pergami fail, despite a long parade of witnesses.
She arrives at Westminster Abbey to attend her husband's coronation on the arm of her loyal supporter, Lord Hood, but is turned away at the door.