When an activist priest meets a grisly death in his own cathedral, the crime has all the hallmarks of a routine Bangkok Park gang killing. The perp is a demented ex-FBI agent named Speer in search of the infamous O'Zebedee brothers who have been hijacking local radio airwaves with their subversive diatribe. Detective Hannah Shaw tracks Speer's enraged quest to Wireless, the retro-radio nightclub and epicentre of a diverse subculture. She must stop the defrocked Fed or fall prey to a campaign of censorship, violence and ultimately death.