John Boorman directs this epic fantasy drama retelling the legend of King Arthur (Nigel Terry). Years after Merlin (Nicol Williamson) retrieves Excalibur, young Arthur pulls the mythical sword from the stone and is finally recognised as Uther Pendragon (Gabriel Byrne)'s son and the kingdom's rightful king. Years later, King Arthur builds his legendary castle at Camelot, forms the Round Table and marries the object of his affection, Guinevere (Cherie Lunghi), a relationship which Merlin foresees trouble in. Meanwhile, the wizard takes on Arthur's half-sister Morgana (Helen Mirren) as his apprentice and the knight Sir Lancelot (Nicholas Clay) confesses his love for Arthur's wife Guinevere, beginning a sequence of events which devastate the land. King Arthur tries to return his kingdom to its former glory and sends his knights on a quest to find the Holy Grail but faces opposition from Morgana and her powerful allies.