In the distant future, the "Crystal Shell Tribe", the descendants of mankind, live underground and have long forgotten the starry sky and the glory of their ancestors. During a deep excavation, historical explorer Huan Entropy accidentally discovered a memory chip from the era of "ancient humans". This small chip is like a key, opening the door to forbidden history. As the information in the chip was gradually revealed, Huanentropy not only saw the past when humans conquered the star sea, but also had a glimpse of the cosmic disaster that almost destroyed everything. Those in power regard this truth as a heresy that subverts the rule. Before being killed, Huan Entropy must unite with a small number of awakened people to escape from the underground prison and find the true heritage buried under the ruins that belongs to all mankind. This is not only a search for the truth, but also a redefinition of one's own identity.
