An evil family - a husband, his three sons, and their naive wife - are involved in drugs, prostitution, and child abuse. The policeman seeking to take them down partners with a vigilante sniper who employs various ruthless tactics to eliminate the family members and their equally corrupt female cousin.
Meanwhile, a well-intentioned midwife hatches a misguided scheme to swap newborns between wealthy and disadvantaged mothers in an effort to provide the babies better lives. As the plot unfolds, a romantic relationship develops between the policewoman and the sniper, complicating her response to his extra-legal actions.
Central to these connected stories is the stately gentleman's club built with council approval in the small city's sleepy industrial quarter. With shops on the ground floor and residences above, the building's fourth level remains strictly off limits, guarded to ensure no one discovers the dark secrets hidden within.