A young woman is hired by a wealthy but sinister man to tutor his two children at the family's isolated estate. When the woman gets there, she finds that the …

　　一个英国女孩（Nicola Cowper饰）在夏威夷被卷入两个男孩（Ilan Mitchell-Smith与Paul Carafotes饰）的探险。他们在一处荒废的海滩钻进一个洞穴，不料遇到火山喷发，出路被堵死，但洞里也震开了一道裂缝，里面竟有一条远古通道一直向…