In sixteenth-century London, a destitute boy named Tom Canty and the Prince of Wales, Edward Tudor, accidentally meet outside the royal palace and trade clothes. Due to their astonishing physical likeness, the guards mistake Edward for a beggar and cast him out, while Tom is swept into the opulent life of the court as the dying king's son. As Edward wanders the lower depths of England, he experiences firsthand the brutal realities faced by commoners, including harsh laws, cruel punishments, and systemic neglect. Meanwhile, Tom struggles to navigate the terrifying etiquette of royalty while trying to maintain his sanity in a gilded cage.
Edward falls in with various outlaws and tramps, enduring severe hardships, but eventually finds a loyal protector in the soldier Miles Hendon. The narrative develops through a series of parallel adventures contrasting the harsh criminal underworld with the luxurious ignorance of the palace. As the coronation day approaches, Edward makes his way back to London determined to reclaim his identity and his crown. The story reaches its climax during the coronation ceremony, where a dramatic confrontation tests the limits of memory, recognition, and law. The ending brings a transformation in the young monarch, who resolves to rule with mercy rather than blood.