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.“那好，我就先上楼了，你也是，别弄得太晚，上班已经够你忙的了，要是你再晚上不好好休息，身体怎么受得了？”林紫音就算是心里很不乐意，但是，她也还是上了楼。