King Arthur's rule is threatened by the adulterous love between Sir Lancelot and Queen Guinevere, a relationship the king's enemies hope to exploit.

King Arthur establishes the greatest reign England has ever seen, and along for the ride are his indispensable Knights of the Round Table, particularly Sir Lancelot. Then, Arthur finds himself a bride, the beautiful Guenivere. While she loves Arthur, she also loves Lancelot and though Lancelot repeatedly fights it, he loves her, too. Treachery is brewing as the evil Morgan le Fay and her knight Sir Modred work to trap them. So begins the decline and eventual fall of Arthur and Camelot.—Tommy Peter

Sir Lancelot travels from France to pledge his allegiance to Arthur Pendragon, whose fame has spread far and wide. Arthur is named king after he draws the sword Excalibur from the anvil in which his father had placed it. Arthur isn't the only claimant to rule as Mordred also has his eye on the throne. Sir Lancelot is immediately attracted to a beautiful woman not realizing she is Guinevere and promised to Arthur. He is loyal and true to his King. Mordred takes advantage of the situation but his treachery is uncovered in the end. It does not lead to a happy ending however.—garykmcd

In the middle ages, the knight, Sir Lancelot of the Lake, travels from his home in Benwick, France to England in search of Arthur Pendragon, who, on reputation alone, he plans to serve loyally as the rightful sovereign ruler of England. There has already been much bloodshed over the issue of rule in England, with Arthur's half sister, Morgan Le Fay, claiming she is the rightful ruler, while Arthur has demonstrated such by the legend of being able to remove the sword Excaliber from its anvil, something that Morgan's knight champion, Modred, was unable to do. In ruling, Arthur plans to marry his childhood sweetheart, Lady Guinevere, in Camelot. Upon their meeting, Lancelot and Arthur become steadfast friends with Lancelot making that commitment to Arthur's service as long as he is needed. The pair prove to be an unbeatable combination as they defeat Modred and his men in battle, with Arthur ascending to the throne. In wanting peace in England and against the advice of Lancelot, Arthur, as King, pardons all those against who he fought in battle, including Modred. Merlin, the sorcerer who has been like a wise father to Arthur, believes it best to keep both Modred and Morgan close to their breasts to be able to watch their actions more closely. Indeed, Modred and Morgan plan to overthrow Arthur by exploiting something that Arthur does not know: that Lancelot and Guinevere have fallen in love with each other. Indeed, Lancelot fell in love with her at first sight before knowing who she was, with both knowing that nothing can happen between them, which may not be enough to prevent Modred's plan. Meanwhile, Percival, Arthur's knight errant, has seen visions that he is to go on a quest in search of the Holy Grail, that search may affect the fates of Arthur, Guinevere and Lancelot.—Huggo