The story of the marriage of England's King Arthur to Guinevere is played out amid the pagentry of Camelot. The plot of illegitimate Modred to gain the throne and Guinevere's growing attachment to Sir Lancelot, whom she at first abhors, threaten to topple Arthur and destroy his "round table" of knights who would use their might for right. The story of the marriage of England's King Arthur to Guinevere is played out amid the pagentry of Camelot. The plot of illegitimate Modred to gain the throne and Guinevere's growing attachment to Sir Lancelot, whom she at first abhors, threaten to topple Arthur and destroy his "round table" of knights who would use their might for right. Parental Guide