Laurie Shoat, a young mother, struggling with post-partum depression, is found dead and her baby is missing. The police assume it was a murder-suicide, but her husband Jack isn't convinced. He believes that his baby may still be alive and begins a search to clear his wife's name and to find the infant.

Investigative journalist Alf Winters (Morrison), meets his American girlfriend, Melissa Jones (Eilbacher), at Auckland airport. As they park outside Alf's house, it explodes. It is soon apparent that persons unknown want them dead, but the police are either skeptical or in the pay of those responsible. They play hide and seek around New Zealand with the stalkers, all the while coping with car chases, plane crashes, bullets and explosions.

An archaeologist smuggles a valuable ancient jewel into the US. He is soon murdered by people looking for the jewel, but he had hidden it. The killers, believe that his widow knows where the artifact is hidden, go after her.

Underwater deep-sea miners encounter a Soviet wreck and bring back a dangerous cargo to their base on the ocean floor with horrifying results. The crew of the mining base must fight to survive against a genetic mutation that hunts them down one by one.