A detective tries to outwit a jewel thief who has kidnapped the daughter of a jeweler to get to an exquisite diamond.

The cunning detective Akeichi must foil a kidnapping plot orchestrated by the notorious jewel thief known as Black Lizard.

Young swordsman Lung Fei encounters strange omens portending the death of his fiancee Ting Tzu-chu. His enquiries with the help of Chief Constable Tieh Hu reveal an astounding story.