> Professor Renhard dies accidentally whilst experimenting with a machine that destroys dust. Meanwhile, when Dr. Anderson operates on a young woman, an accidental slip of the surgeon's knife leads to more than her death. The girl's brother, Gaston Renhard's manservant, festers with revenge and incriminates Anderson, who is eventually judged as certified insane. When he is then incarcerated in an asylum, Gaston's revenge is complete. However only Dr. Anderson could avert the catastrophic consequences of Renhard's mad experiments....