Soon bumbling veteran Madam Chu (Carrie Ng) and young eager beaver rookie Ling (Valerie Chow) are assigned as partners. On their first day on the job together, they happen upon a massive arms ...

Sham Shui Po, there is the most famous red-light district in Hong Kong. Li (Carrie Ng) owns a few of the apartments in the building and she earns a living by renting them out to the prostitutes.