In Portland, a city commissioner who was actively involved in the fight against organized crime nearly dies in a murder attempt. The hitman is also injured and flees to California. Crossing a state line brings the FBI into the case and the bureau's investigation is supervised by Erskine and Colby. The hitman ends up in San Francisco, where he and a young pregnant woman fall in love. The FBI foils a second murder attempt on the commissioner. Now, the first hitman is marked for murder for failing to kill the commissioner. and his girlfriend is also endangered.