剧情描述美国特务奉命调查一名科学家，并破坏他以细菌制造巨人的方法，使它不致落入苏俄之手。

After being fired from the Space Agency, the disgruntled (not to mention crazy) Dr. DeMarco creates an Astroman from a criminal’s dead body. However, he loses control of his creation, which goes on a killing spree, attracting the attention of an international spy ring and the CIA.