Ryo Hazuki es un joven que lleva una vida corriente, hasta que un día ve cómo asesinan a su padre y toda su vida da un vuelco.

Tras ser testigo del asesinato de su padre, Ryo recibe una carta que puede contener pistas, pero está escrita en chino y es casi indescifrable.

Ryo por fin conoce el contenido de la misteriosa carta, pero lejos de aclararlo todo, solo le da pistas para seguir adelante con sus investigaciones.

Decidido a viajar a Hong Kong para seguirle la pista a Lan Di, Ryo descubre que no tiene dinero suficiente y deberá trabajar para conseguirlo.

Ryo tiene que enfrentarse a Guizhang si quiere desbaratar los planes de los Mad Angels tras haber secuestrado a Harasaki.

Ryo meets Lishao Tao, the person he was looking for. Lishao, a martial arts master, easily defeats Ryo and tells him to go home. Thinking he lost because he does not have enough strength, Ryo goes around Hong Kong to find a martial artist.

Ryo is living at Xiuying Hong's house. Xiuying ignores Ryo's wish to meet Yuanda Zhu and keeps making him do chores for Man Mo Temple. To understand Xiuying's notion, Ryo must learn wude the principles of martial arts.

Ryo finds a book written by Yuanda Zhu in Xiuying's library. In the book he finds a memo of chawan sign, which could lead to danger with one mistake. Despite the danger Ryo uses it to find Yuanda Zhu.

To find Yuanda Zhu, Ryo follows Ren, the leader of Heavens. Gathering information from Ren's acquaintances they reach the location where Yuanda Zhu is said to be, but they soon find out that this was Yellow Heads' trap.

Ryo and Ren finally find Yuanda Zhu. However, they are soon attacked by the Yellow Heads and Yuanda gets kidnapped. Ryo gets cornered but is saved by Xiuying. Xiuying was worried that Ryo would fall in to the evil course blinded by revenge.

Ryo and Ren successfully sneak into the Yellow Heads' headquarters to rescue Yuanda Zhu. But the Yellow Heads all knew about their plan to sneak in. Surrounded by their enemies, the two fight Yuan who is one of the leaders of Yellow Heads.

Ryo finally reaches Lan Di, the man who murdered his Father. Blinded by revenge Ryo viciously attacks Lan Di. Lan Di easily dodges Ryo's attacks and leaves. Yellow Heads' Dou Niu realizes his plan has failed and attacks Ryo.