With Hong Kong's fate of being handed over to Mainland China rapidly approaching, Hong Kong films began having Mainland Chinese characters getting caught up in Hong Kong life. The charm of Pursuit Of A Killer lies in the long awaited reunion of two Five Venoms; Lo Meng, who plays a mainland Chinese criminal escaping to Hong Kong in search of a better life, and Sun Chien, the cop who helps him adjust to Hong Kong life while tracking down his mysterious killer.