New Year's Eve 1941, war has been declared and the Japanese internment is in full swing. Los Angeles is gripped by war fever and racial hatred. Sergeant Dudley Smith of the Los Angeles Police Department is now Army Captain Smith and a budding war profiteer. He's shacked up with Claire De Haven in Baja, Mexico, and spends his time sniffing out fifth column elements and hunting down a missing Japanese Naval Attaché. Hideo Ashida is cashing LAPD paychecks and working in the crime lab, but he knows he can't avoid internment forever. Newly arrived Navy Lieutenant Joan Conville winds up in jail accused of vehicular homicide, but Captain William H. Parker squashes the charges and puts her on Ashida's team. Elmer Jackson, who is assigned to the alien squad and to bodyguard Ashida, begins to develop an obsession with Kay Lake, the unconsummated object of Captain Parker's desire. Now, Conville and Ashida become obsessed with finding the identity of a body discovered in a mudslide. It's a murder victim linked to an unsolved gold heist from '31, and they want the gold. And things really heat up when two detectives are found murdered in a notorious dope fiend hang-out.