在这部圆桌武士剧情/动作/冒险片中,英气勃勃的武士蓝斯洛，被王后吉尼维尔爱上了，遂跟亚瑟王之间构成了微妙的三角关系。本来运作顺畅的圆桌会议掀起波澜，君臣之间势必要作个了断。
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.
