Wu Shi awakens to find herself adrift in a star‑filled void, her consciousness trapped inside a colossal, black‑tomb‑like entity. A fleet of starships unleashes a barrage of energy upon her, but instead of pain she feels only a strange, tingling sensation. Instinctively she releases a pulse of purple destructive energy, only to be sliced apart by a mysterious silver dagger—Bolka’s Surgical Knife—and her existence seems to end.

She then awakens within a strange system panel that reveals her true identity: she is Emperor III, a powerful Herrscher from the Honkai Star Rail universe, whose will has been sealed and whose true body, the Iron Tomb, lies in a state of Concept Convergence. The system informs her that she can currently wield only a fraction of her former power—limited to three uses per day—and must gather Resource Points by traveling to various worlds, completing tasks, and resolving troubles to repair her vessel and lift the seal. In her human avatar form she can summon information projections from her database, gradually uncovering fragments of her lost past while navigating dangers, mysteries, and alliances across multiple realms.