Chinese Inspector Cheng (Carol Cheng) returns to her beloved homeland and enjoys the trappings of her moderate fame. Her trip to Hong Kong has left its mark though and the once fiercely anti-capitalist Inspector now finds herself warming to her westernised neighbours. Meanwhile, the cousin (Waise Lee) of her Hong Kong partner Wu visits China with his uncle (Lam Kau, returning in his role from the original) and brings his westernised ways with him. When he witnesses a murder in the hotel that he's staying in, the Hong Kong cop now comes under the scrutiny of the Chinese law enforcers. Inevitably, this solitary witness is teamed up with Inspector Cheng in an attempt to find out the identities of the killers and their motives for the crime. Alongside this odd couple is Cheng's unusual cousin Hsiao and policeman Niu. Together the investigators uncover an underworld plot that puts them all in danger and requires their individual skills to succeed.
Due to the successful first film, this sequel followed hot on its heels, and is rather similar to the first one. A feeling of deja-vu is felt, and though it has some good comic lines, it can get tedious with its farce. The pace seems to stall at times, however, Carol Cheng, as always, is superb as the rather and naive inspector who comes across like a country bumpkin. She is what makes this film watchable. The karaoke scene was quite funny.
