In 2247 AD, humans mastered the "light frequency encoding" technology, which can encapsulate information, energy and even consciousness into light waves of specific frequencies, establishing a "light network" covering the solar system. However, the core technology of the optical network is controlled by the monopoly company "Yaoguang Group". They use technical barriers to squeeze colonial resources. At the same time, an abnormal light wave called "dark flash" is swallowing up the optical network nodes, causing technological paralysis in many places.
