Scientist Leon Jackson defected to the Soviet Union for the love of a woman but now wants to return to the states with his son Alex.

Two geologist friends of Steve Austin disappear in Californa while placing earthquake sensors in the woods.

Steve Austin has met a colony of space travelers living inside a California mountain.

When an Aircraft mysteriously disappears in a test flight, Steve's friend Kelly Wood becomes the prime suspect, since she was the one driving the plane at the time. But for some reason, she has no memory, except remembering seeing a Japanese Zero plane from World War 2. Since no one believes her, Steve knows he must clear his friend's name, before it's too late.