During the Northern Song dynasty, rumors spread through the martial world of a black gem worth a fortune. If a destined person's blood is dripped onto it, the gem gives off brilliant beams of multicolored light. Anyone who absorbs these strange lights into their body gains a mysterious power of nature. It can keep them forever young and make them immune to all diseases.
Because of this priceless black gem, Wu Xingchi infiltrates the residence of Prefect Li Yi, hoping to seize it. But the gem he manages to steal is a flawless fake. His effort comes to nothing. Wu Xingchi fails to get either the real or the fake black gem. Both mysteriously vanish without a trace, and their whereabouts remain unknown to this day. The two black gems, real and fake, also set Wu Xingchi at odds with the Zheng sisters. In their clashes, Wu Xingchi and Zheng Xiaoyan become bitter rivals who cannot help falling for each other. As the martial-world detective Ye Junchi searches for the two gems and tries to uncover the true identity of the person plotting behind the scenes, Wu Xingchi does everything he can to help. Wu Xingchi discovers that Zheng Xiaoyan is the former love of the martial-world detective Ye Junkai, whose new sweetheart is Song Zhu'er. Ye Junkai cannot accept that Wu Xingchi and Zheng Xiaoyan are in love, and tries desperately to break them up, while Song Zhu'er grows jealous and frames Zheng Xiaoyan. Before long, all four are caught in a chaotic whirlpool of love and hatred, unable to escape...
Through tireless effort, Wu and Ye manage to find several black gems, both real and fake. Some martial artists in the world of martial arts will stop at nothing to claim all of them for themselves, trying to snatch them from Wu and Ye. This sparks a series of thefts, plots, and deadly clashes...
