A young woman is looking after her sister's house, unaware that her sister and neighbor have been murdered by their handyman who also happens to be a serial killer.

A mom of three buys a cheap, old house. However, the backyard cubby-house is cursed with pure evil that took the previous owner's two kids and her kids are next.

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.

Concert promoter Nick Loomis is sent to Sydney by his ex father-in-law and boss Garth Kingswood, and asked to deliver a briefcase to a foreigner. When the man is killed in the airport, Loomis ends up entangled in corporate spying and is forced to fight for his life with the help of Terry McKenna, a woman from Austin working for the Sydney Opera House.

A group of hardened criminals on the lam take refuge in the badlands of the Australian outback. When they come across a small settlement, they take hostages in case the law shows up, but are outwitted by a supernatural force, a powerful shaman.