Allen (Vanessa L. Williams) is a senior employee of the largest weapons manufacturer in the United States, Xili Corporation. She gradually discovered some of the shady things about this company - the company produced a banned weapon and traded it on the black market. The FBI used Allen to obtain some evidence, and Allen became a key witness in this case. In view of the power of this company, the Witness Protection Center sent Marshal John (Arnold Schwarzenegger) to protect Allen. When John rushed to Allen's house, the killer was murdering Allen. John rescued the frightened Allen and told her the current situation. After settling Allen, John went to the bar to meet his companion Robert (James Caan). Robert told John that because the plan to protect the witness was leaked, he had to rearrange it and asked John to act together. John, who had always completed tasks independently, became suspicious. He gradually began to feel that the forces behind this matter were not simple.