존 크루거(아놀드 슈워제네거)는 국가 기밀의 중요한 단서를 알고 있는 증인이 위험에 처할 경우 증인의 목숨을 구하고 그의 모든 과거 기록을 '지워버리는(이레이저)' 연방 경찰 증인 보호 프로그램 전문가이다. 한편 무기 제조업체의 중역인 리 컬른(바네사 윌리엄스)은 무기 제조업체가 정부 고위층과 짜고 국제 테러 조직에 신무기를 팔아 넘긴다는 정보를 입수해 FBI에 알린다. 위기에 처한 그녀는 자신의 존재 기록을 지우기 위해 크루거에게 도움을 청한다.
The East Side Kids discover that one of their own, Danny, is torn between staying and school and becoming a boxer, and is getting mixed up with gangsters.
A group of young men who work at an aviation factory begin to suspect that a doctor who runs an air ambulance service is secretly a spy transporting secret information from the plant to enemy agents.
A street kid has dreams of becoming a jockey. He gets his chance when he and his gang discover a poor old man who has a championship race horse. The man agrees to let the boy ride his horse in a race, but first the gang must get enough money to pay for the race's entry fees.
Sir James Blake has retired from Scotland Yard so that he can assist his niece Hope and her friend Jerry in developing an apparatus they have invented. Sir James thinks that their invention has the potential to prevent wars, and plans to donate it to the League of Nations. But a gang of criminals led by the elusive "Scorpion" steals the device, and Blake and his associates must recover the invention and determine the identity of the "Scorpion".
A secret apparatus that controls bombs by remote control is stolen from a laboratory. A federal agent is assigned to recover it, and his investigation leads him to a creepy mansion that is honeycombed with secret passage ways.
