Jack Dacey

An Ulster Volunteer Force vigilante, turned police informer, is sent by the British government to New Zealand to start a new life, leaving behind his eldest son. Although his wife and two young boys are also in New Zealand, they are no longer together, and he has a new love interest. After some eight years his past catches up with him when former comrades show up, intent on extracting revenge. After two nearly successful attempts by them (in Dunedin), the action moves to a final confrontation and shootout in the hills above Queenstown.

Marine biologist Jack Ellway and his son Brandon are drawn to the Polynesian island of Malau to study the effects of recent seismic activity on the area's marine life. Along with the local doctor Alyson Hart, they soon become caught up in the investigation of a series of recent drownings with unexpected results. As Jack explores the surrounding ocean for a mysterious marine creature, Brandon discovers and befriends a three-foot-long baby creature that is able to leave the ocean and walk on land. As more dangerous and giant creatures come onto the island, and the military begins to take offensive action, Jack must risk everything to save the creatures, the island and his son.