The Feds, led by Holman (Wendell Corey), spies from an unnamed foreign power led by the remarkable Satana (Tura Satana) and the mafia are all after DeMarco's secrets. A confused search begins for the mad scientist before he can create a refined version of his zombie, plus try and capture the original...
Much weirdness follows and much unnecessary (to the plot anyway) female flesh too. We're never told why DeMarco's weird assistant Franchot (William Bagdad) spends much of the film menacing a young woman in a bikini, whom he has strapped to a table but it's just that kind of film. In the great tradition of trash movies it makes no sense whatsoever.