When the murder of one of her sources is written off by the police as just a drug deal gone bad, journalist and former police officer Karen Grant finds herself on the hit list along with Ann Falconer, the solitary witness to the killing. They have only one person they can turn to for help: Steve Nastos, Grant's ex-partner and disgraced detective who is now a private detective in business with rash lawyer Kevin Carscadden. Added to the mix are police officers David Morrison and Jake Radix, two rookies determined to advance their careers into the drug squad by any means necessary. When the dirty cops, outlaw bikers, and Nastos meet for the inevitable confrontation, only those willing to get the filthiest will survive.