Dr. Steven Sorenson plans to tap the geothermal energy of the Earth's interior by means of a thermonuclear device detonated deep within the Earth. Despite dire warnings by fellow scientist Ted Rampian, Dr Sorenson proceeds with the experiment after secretly learning that he is terminally ill. This experiment causes a crack to form and grow within the earth's crust, which threatens to split the earth in two if it is not stopped in time.

　　描述美国政府的细菌战实验室遭遇意外，一些足以令人致命的病毒从实验室的容器中流失，将实验室中几名科学家杀死。其中最厉害的一种病毒称为“撒旦病菌”，它能够杀死任何人，而这种病菌可能被一名疯子偷去了，于是当局想尽办法追踪捉拿这名疯子。

　　1903年，在康沃尔郡，一群当地人发现一个水下城市，其历史可以追溯到1803年，它隐藏走私和水生生物的社会......