CHOR AU-KUEN (Ruco Chan) bears the grief of the loss of his family and returns to the walled city in hopes of finding his long lost sister, only to find out that the place he grew up in has become a lawless no man’s land. Concealing his real identity as a Bajiquan master, he creates a new identity and gets acquainted with a feisty hair salon lady boss, TIU LAN (Nancy Wu), a dentist, DUEN YING-FUNG (Benjamin Yuen), and a worker, BUT TAK-LIU (Lam Tsz Sin).

Apart from that, he even gains recognition from a highly skilled martial artist YUK BO-FUNG (Yuen Qiu). To restore law and order in the walled city, AU-KUEN unites everyone to form an association to collectively resist the villainous forces, which instead causes clashes between him and YUK BO-FUNG’s son LUNG SHING-FU (Philip Ng), the underground fighting champion. Just as things are picking up, a key figure of the gang out of the blue dies after being attacked by a Bajiquan martial artist. Joining forces to probe into the matter, AU-KUEN and TIU LAN discover that FA MAN (Grace Wong), a stripping troupe leader, has something to do with it and thus unravel the truth of his father’s murder. However, what AU-KUEN still cannot get over with is the fact that his acquaintance is a member of a ruthless assassin gang.

In the meantime, he is also forced to fight against his buddy, something that was supposed to happen fifteen years ago..