Former U.S. Army major Paul Krenner plans to conquer the world with an army of invisible soldiers and will do anything to achieve that goal. With the help of his hired thug Julian, Krenner forces Dr. Peter Ulof to perfect the invisibility machine that Ulof invented. He imprisons Ulof's daughter Maria to ensure Ulof's compliance. The nuclear materials that Ulof needs to improve his invisibility machine are extremely rare and kept under guard in government facilities. Krenner arranges the prison break of notorious safecracker Joey Faust to steal the materials that he needs. Faust will do the jobs while invisible. Krenner offers Faust money for the jobs and Faust expresses grievances against working for him. Faust threatens to inform on Krenner if he is returned to prison, but Krenner warns Faust that he is wanted dead or alive, and so his life is expendable. Faust reluctantly complies; however, when he meets Krenner's female accomplice, Laura Matson, he slowly charms her into a double cross. Faust continues attempting to escape, and it seems he might succeed while invisible. However, Dr. Ulof's test
guinea pig dies and, during the second time that he is invisible, Faust uncontrollably reverts from invisible to visible and back again. Despite these drawbacks, Faust is intent on breaking free from Krenner's control. Dr. Ulof reveals to Faust that both of them are dying from
radiation poisoning as a side effect of the invisibility machine. He convinces Faust to stop Krenner. Faust and Krenner fight in the lab until an accidental nuclear explosion kills them both and puts an end to Krenner's plans for world conquest. ==Cast==