wolf, as the half-crazy assistant to dr. heller, an inventor of robots, murders his master and attempts to take over the world with his death-ray equipped robots. he then proceeds to borrow industrial robots all over the world for high fees. "baumann", a mining engineer and friend of dr. heller, then visits wolf in his entrenched laboratory of heller's company and learns about his plan. having witnessed the despair of his co-workers who lost their jobs due to being replaced by robots he explains to wolf that the people will revolt when they lose their jobs en masse. wolf, however, wants to crush down any revolts using his war machines and reach for world domination. he is then prevented from attaining this goal by baumann and dr. heller's widow, as he gets killed by his own invention.