Watch The Darkest Sword (1970) Official Trailer

An evil student (Yee Yuen) cripples his old master and steals the dark sword that is just made. The old master tells him that his dark sword will be defeated by a golden sword. Yee Yuen begins to challenge all the swordsmen of the Feng school and kills all of them including their master, Kong Ban earlier was forced to leave the school and now has to find the Golden Sword in Order to take revenge and defeat the evil Dark Sword.