Private detective Ray Infantino searches for a missing girl named Tania. The case takes him to San Francisco, the city he abandoned years ago after his fiance was murdered.
Thrust into his old city haunts, Ray finds that Tania may not be lost at all. Tania saw a murder, and a criminal gang, the Black Fist Triad, wants to make sure she never sees anything again.
Meeting with various witnesses—ex-cops, prostitutes, skinheads—he relentlessly tracks the evidence. But the hunt for Tania fires his obsession with avenging the murder of his fiancée. When the triad retaliates and blood begins to flow, Ray must walk the knife edge between revenge and redemption on the streets of San Francisco.