In a time now lost in the mists of memory, the great King Arthur rules in the legendary citadel that is Camelot. His Knights of the Round Table perform acts of derring-do and spend their spare time jousting, much to the delight of the local citizens and especially to Princess Ilene, a guest at Camelot. Watching her from afar is a young, inexperienced squire called Valiant, and when the young Welsh princess is sent home to marry Prince Arn, Valiant contrives to accompany her masquerading as Sir Gawain. Meanwhile, the evil sorceress Morgan le Fey, sister to King Arthur, has convinced the tyrannical Sligon, ruler of the Viking kingdom of Thule, that he should steal Arthur's sword, the powerful and magical Excalibur, knowing that its loss could bring about Arthur's downfall. So into the fray comes Sligon's unstable and psychotic brother Thagnar, who manages to steal the sword. Pandemonium reigns. But Valiant is having problems of his own - kidnappers attempt to steal away the Princess, and after various skirmishes, including one with a mysterious character who lives in a cave and purloins treasure, women and other things of value, Valiant manages to return the Princess to her homeland - although he also manages to have a duel with the Princess' jealous fiancé, Prince Arn. All things converge as Valiant is finally informed of his heritage by the stranger from the cave... Boltar of Thule. He informs the lad that he is Prince Valiant, rightful heir to the kingdom of Thule, and with his help, Valiant returns to the land of his birth to rightfully claim what is his.
这一集中,食死徒开始肆无忌惮横行于麻瓜和魔法两个世界中,霍格沃茨内忧外患,危机重重。邓不利多(迈克尔·甘本 Michael Gambon 饰)带着哈利(丹尼尔·雷德克里夫 Daniel Radcliffe 饰)辗转找到隐居多年的霍拉斯·斯拉格霍恩,请他出山接替斯内普(艾伦 ·里克曼 Alan Rickman 饰)担任魔药学的老师。霍拉斯曾经教授过无数优秀的学生,而汤姆·里德尔——伏地魔——正是他最出色的一名弟子。邓不利多深信霍拉斯保有伏地魔不死身的秘密,他希望哈利能够说服霍拉斯。 另一方面,德拉科·马尔福(汤姆·费尔顿 Tom Felton 饰)宣誓效忠伏地魔,他想方设法将食死徒引入霍格沃茨。而此时,罗恩(鲁伯特·格林特 Rupert Grint 饰)、赫敏(艾玛·沃特森 Emma Watson 饰)他们却还沉浸在青春的躁动中,全然不知黑暗正渐渐逼近……