Tiger Chen is the sole student of his elderly master’s Ling Kong Tai Chi style. While Tiger excels in the physical aspects of his training, Master Yang struggles to instill in Tiger the philosophical aspects, and fears for his character. Tiger harbors a determined ambition to prove the martial effectiveness of the style, as he competes in the local Wulin (武林) contest. In the meantime, HKPD officer Sun-Jing Shi has been leading an investigation into Security System Alliance (SSA), a private security firm owned by the mysterious Donaka Mark. Suspected of hosting an illegal fighting operation, Sun-Jing turns one of Donaka’s fighters into a mole, but he is discovered and personally killed by Donaka. Despite the setbacks, Sun-Jing wants to continue investigating, but without any evidence Superintendent Wong has the case closed. Believing the evidence would eventually come through, Sun-Jing secretly continues investigating Donaka and things change with Tiger’s involvement.