This play is adapted from the novel of the same name by Jinjiang great writer Priest. Thousands of years ago, in order to snatch the survival resources of starfish, extremists among the Earth Stars attacked the entire starfish, triggering a prehistoric war between the Starfish and the Earth Stars. In order to compete with the Earth Star people with superpowers, the Star Sea people created four sacred artifacts. Under the leadership of the leader "Kunlun" and the leader of the Earth Star Peace Faction, the Black Robe, the "Star Sea Star Justice League" finally won the war, and the Earth Star people retreated to live in the core of the earth. After the war, "Kunlun" disappeared. The black-robed envoy kept his promise to "Kunlun" and became the guardian of the Earth Star. The people of the Sea Star and the people of the Earth Star have lived in peace and harmony since then, maintaining peace for nearly ten thousand years. Until the Four Sacred Artifacts disappeared and the energy weakened, Earthlings continued to escape from the core of the earth to the surface, using their powers to do evil. To this end, Haixing's senior officials established a special investigation department responsible for catching these Earth Star people and returning them to the "Earth Star". Today in the thirty-fifth century, endless strange events occurred in Dragon City, the center of Starfish. During the investigation, a seemingly ordinary biology professor, Shen Wei, came into the sight of the Special Investigation Division and everyone. Shen Wei's true identity is the guardian of the Earth Star - the black-robed messenger, and Shen Wei seems to be hiding a secret about Zhao Yunlan... As the investigation deepens, the source of a series of strange events seems to be inextricably related to the "Four Sacred Artifacts". In order to seize the Four Sacred Artifacts, the evil forces of Earth Star are ready to move. Behind the conspiracy, the true identity of Zhao Yunlan and the mysterious connection between Shen Wei and the mastermind behind the scenes are also revealed one by one.