At a deep well test site, a Company man turns the experimental earthquake equipment on while the designer was encouraged to take a vacation. But he cannot turn it off.
They first feared she will tell all she knows about their project. However, the entire west coast is now shaking, Mt. Saint Helen's type quaking. Some people fear a volcano in Seattle and other places along the west coast They hope she can fix what they did. They try snatch her and return her back to the test site.

Their four kidnapers sent to return her are all killed. They try several more times and the total go to 15 dead.
Their kidnap car was stolen in NYC but traveled only 100 miles to Seattle. The FBI and Inspector Strong know who will ship a car for one job, but they deny everything.
The powers back in DC decide she must be removed permanently. They change their minds and try to call off the hit but can't reach anyone.
The Inspector's team and the kidnapping victim have a running gun battle ending up in the tunnels under Seattle.
Will the secret quake project ever become exposed and can they be controlled?