John "Eraser" Kruger is a U.S. Marshal who works for the Federal Witness Security Protection Program (WITSEC). John is assigned to protect Dr. Lee Cullen, a scientist who works for Cyrez Corporation, a company that creates and manufactures weapons for the military. Lee has come across plans in which Cyrez plans to sell a top secret electronic pulse rifle to terrorist Sergei Ivanovich Petrofsky. With its unparalleled firepower, the sale of such weapons to the wrong hands would tip the balance of power.