When his father dies in a car accident in Europe, Friedberg Jr. returns home in order to manage the inherited chemical plant in Munich.
He scarcely survives an explosion in the laboratory but his employee Dr. Terbot (Renato Carmine) dies.
She turns out being a Soviet-Russian secret agent and confuses him with her former lover, his twin brother Alexander.
Alexander plans to fake his own death by having Mike killed so that he is safe and can enjoy his life with Sonja.
In the end, his evil brother uses Sonja to contact Mike and to lure him into a deadly trap.