Graduate students David, a white man, and Emily, a student from China fall in love with each other on campus of University of Colorado at Boulder. They are fascinated by sprawling topics likes the universe, the world, and human beings.
When David is caught by a tornado on the Kansas plains he is carried to a time-space tunnel which he traverses along. Stranded in East Africa during the Stone Age, David experiences primitive life and strange romantic adventures.

Emily watches with the advice of the Heavenly Wise Man and learns about the vast variety of human life.

David and Emily fall accidently into a time-space tunnel in Bermuda Triangle and traverse to the future world. They enjoy the perfection of the future society. There they have some fantastic experiences. Finally they witness the tragedy of the World End. By chance they return to the present world by reverse crossings.

David and Emily reunite and explore the cosmos together. They make new discoveries and create new theories about the world and the uninerse.

David and Emily die in a possible world nuclear war which is widely wished not to happe