As Sir Harry Percy patrols England's rugged North, even the Scots, his frequent adversaries, admire his audacity and courage. Claiming his ceaseless vigilance means his spurs never cool, they call him Hotspur. Yet when Harry questions royal corruption, Richard II bestows another name: traitor.

Escaping death, Harry joins Duke Henry Bolingbroke, whose fortune Richard stole and who leads a campaign to improve Richard's governance. Soon, though, Henry, too, acts despotic, ordering executions without fair trials and plotting to seize power directly. Alarmed, Harry exacts a vow from him to not oust Richard. But Henry violates his oath, inciting a mob to force Parliament to make him King Henry IV. Harry boycotts Henry's coronation but, realizing he serves the nation regardless of who wears the crown, later returns to duty, with Henry's backing.

Will their reconciliation last? And can Harry's newfound love with an ex-abbess protect him not only from threats on the borders but those in dark palace corners? Never has his motto, Esperance—Hope—mattered more!