A journalist sets out to report on a minor earthquake in the Australian outback, and finds that the tremor was a result of a small nuclear explosion - part of an extortion threat that has the government fearing nuclear blackmail. With the help of local reporters, and despite the harassment of the security agencies, he sets out to avert the crisis.

A young amnesiac who was left for dead following a brutal assault is now being stalked by her assailant who wants to finish the job before she can remember the circumstances of the crime.

Alien beings, who settle in a small midwestern town, are disturbed by a young professor determined to rescue his daughter from their clutches.