An accidentally-created energy-being overruns an experimental power station, where personnel whom it has killed are restored to life with electronically-controlled pacemakers and are made to service the "being" by a fanatical German scientist who overtly pretends to be looking for a way to destroy it. After the force kills a security guard and newly-recruited scientist, the latter's psychologically disturbed brother attempts to uncover the station's secret, along with the police sergeant investigating the most recent death with the assistance of a dead-but-alive woman staff member.