Bond (Roger Moore) investigates millionaire industrialist Max Zorin, who is trying to corner the world market in microchips. He establishes that Zorin was previously trained and financed by the KGB, but has now gone rogue. Zorin unveils to a group of investors his plan to destroy Silicon Valley which will give him a monopoly in the manufacturing of microchips.
Bond uncovers Zorin's plan is to detonate explosives beneath the lakes along the Hayward and San Andreas faults, which will cause them to flood. A larger bomb is also on site in the mine to destroy a "geological lock" that prevents the two faults from moving at the same time. Bond destroys the bombs, and subsequently kills Zorin.