Anarcoticsinvestigatorfortheharborpolice,EiichiTsuda,isdrivenbythoughtsofvengeancefortheoverdosedeathofhisbrotherandthesubsequentdeclineanddeathoftheirmother.Tsudaactsviciouslyandwithdisdainforlegalnicetiesinhisexplorationofthecriminalfactsbehindtheexplosionofafreighterintheharbor.Hegoesundercoverwithabandofdrugsmugglers,buthismethodsthreatentodestroyhimaswellashiscase.