The story takes place in a future world called the "Photon Era", an era in which revolutionary advances in technology have been fully realized. The pioneer of the story is named Lu Xuan, a young scientist. He is an important figure in the technological revolution of this era. The protagonist Eric met Alice due to time and space confusion after an unknown number of years... (The early foreshadowing may be a bit long, the first few pictures are to explain the background.)
