No team of “Martial Arts World” sword-and sorcery epic-makers ever matched that of exceptional director Chu Yuan and best-selling author Ku Lung. This is one of their most powerful and interesting, giving screen idol Derek Yee one of his most challenging roles. Here, he is the ambitious, proud master of the “Meteor” style of swordsmanship, who is brought to the edge of suicide by betrayal. A good woman saves him and brings him to, literally, the Valley of Happiness. But even that’s not enough for the obsessed swordsman, who takes the title weapon (his father-in-law’s wedding gift) and goes on a selfish rampage of violence and sex. Master kung-fu choreographer Tang Chia guides a first rate cast (including king screen villain Wang Lung-wei as the “Immortal God of Eagle”) in one of their most memorable productions.