Walter Scott prefaces Ivanhoe by defending his shift from Scottish subjects to late‑12th‑century England as an artistic necessity and by claiming novelist’s licence to render ancient manners in modern speech so readers can grasp motives while accepting inevitable anachronisms. Into that frame he sets a landscape of Norman ascendancy and Saxon dispossession, where chivalric display and ethnic prejudice drive plot and character.

The action opens in the great forest and the environs of Don/Sheffield/Wentworth. Cedric of Rotherwood, a proud Saxon franklin, guards the Saxon heiress Rowena; his retainers Gurth and Wamba give rustic, servile perspective. At Ashby’s tournament a mysterious Disinherited Knight (Wilfred of Ivanhoe) — later identified with the wounded champion — and an enigmatic “Black Knight” upset Norman dominance: Ivanhoe wins, names Rowena queen of beauty, but is grievously hurt. Isaac of York and his daughter Rebecca, Jewish, virtuous and vulnerable, nurse Ivanhoe in secret and bear him to safety toward York, dramatizing contemporary anti‑Semitism and economic dependence.

Cedric’s party — including the indecisive Athelstane — journey through the forest and fall into Front‑de‑Bœuf’s ambush. Cedric, Rowena, Athelstane, Isaac and Rebecca are taken to Torquilstone. Front‑de‑Bœuf’s greed and brutality, De Bracy’s cunning, and Bois‑Guilbert’s imperious Templar presence set a tableau of competing motives: avarice, lust, religious zeal, and ambition. Outside, a coalition of yeomen and outlaws — Locksley (a Robin‑Hood figure), the Black Knight, Wamba and Gurth — challenge the castle by formal cartel and then by force. Wamba’s disguises, the hermit’s marginal piety, and communal discipline among the assailants contrast with the castle’s cruelty.

The siege culminates in a fierce breach and a deliberate conflagration set by Ulrica, a Saxon crone bent on vengeance. In the smoke and flames the Black Knight displays prodigious prowess, the Templar makes a contested rescue of Rebecca, Ivanhoe is borne out to safety, and Athelstane is struck down and carried from the field; Front‑de‑Bœuf’s ruin and Ulrica’s death follow. The outlaws organize the spoils and administer rough justice; Isaac negotiates Rebecca’s safety through ransom and clerical mediation, underscoring Jewish precariousness.

Parallel intrigues converge at Templestowe and the royal court. Isaac seeks Rebecca’s redemption before Lucas Beaumanoir, newly severe Grand Master, who, misled by rumor and prejudice, accuses Rebecca of sorcery. She demands trial by combat. Bois‑Guilbert, torn between passion for Rebecca and his Order, takes the lists; Ivanhoe, though wounded, champions her. Bois‑Guilbert collapses from agonized pride and dies; Rebecca is declared innocent. Richard I (the Black Knight) then arrives, quells conspirators, and rescues the persecuted. The episode closes with conspirators routed or fleeing, private loyalties reconciled, and the novel’s central tensions — Norman versus Saxon, chivalric ideal versus corrupt practice, and the fraught condition of marginal figures — sharply exposed.