A story combined by the lives of three night clubs girls in. Porsche is a once-famous aging night club girl; May is forced to work in a night club in order to pay her step-father's debt; and GiGi needs a huge amount of money in order to help her fiancé. They all know Night Club Girl is not a good reputation job, and they expect to start over again someday. However, it seems they cannot break the "curse" that "Bad girls never have fortune"

The Royal Hong Kong Police put into operation a new plan to counteract the problem of increasing violent crimes committed by new arrivals from across the border in China. In agreement with Chinese authorities, three Hong Kong detectives go undercover as illegal immigrants in order to infiltrate the powerful gang that is organising the crime wave.