The romance between Guinevere and Lancelot destroys King Arthur's dream kingdom.

In England long ago, King Arthur first encounters his bride-to-be, Guenevere, in the enchanted forest surrounding his castle at Camelot. Following their royal wedding, Arthur's happiness inspires him to establish The Knights of the Round Table, an order of chivalry in which all members will be bound by a common desire to aid the oppressed, keeping faith with trust and honor. A young knight, Lancelot Du Lac, journeys to England to join the order when Arthur's call reaches France. Brave and purehearted, Lancelot quickly becomes the most celebrated of all Arthur's knights. Guenevere at first resents his popularity, but after watching him apparently breathe life back into the body of a knight he has wounded in a jousting match, her scorn turns to admiration and ultimately to love. Despite their deep affection for Arthur, Guenevere and Lancelot become secret lovers. Arthur refuses to pay heed to the rumors circulating throughout his court and sends into exile all those who defile the names of Lancelot and Guenevere. Arthur's illegitimate son, Mordred, arrives at Camelot to seek a declaration of his identity, and when he is refused, he spitefully wins the aid of several knights in trapping Lancelot and Guenevere in a love tryst. Lancelot escapes, but Guenevere is found guilty at a trial by jury and sentenced to be burned at the stake. Forced to support the ruling of his own court, Arthur watches in grateful silence when Lancelot rides into the courtyard, frees Guenevere, and carries her to safety. Guenevere enters a convent, and as Arthur and Lancelot prepare to battle, Arthur reflects sadly on the dream that was to have been Camelot. Songs : "I Wonder What the King Is Doing Tonight" (King Arthur); "The Simple Joys of Maidenhood" (Guenevere); "Camelot" (chorus & King Arthur); "C'est moi" (Lancelot); "The Lusty Month of May" (Guenevere & chorus); "Follow Me," "Children's Chorus" (chorus); "How To Handle a Woman" (King Arthur); "Take Me to the Fair" (Guenevere, Sir Lionel, Sir Dinaden & Sir Sagramore); "If Ever I Would Leave You" (Lancelot); "What Do the Simple Folks Do?" (King Arthur & Guenevere); "I Loved You Once in Silence" (Guenevere); "Guenevere" (chorus).