Li Youyi, a brilliant but reserved university freshman, joins a prestigious polar expedition to the Arctic, carrying a mysterious ancient artifact known as the Dao Ancestor Taiji Fish. What begins as a scientific journey quickly descends into chaos when a monstrous, purple-black bear creature with human-like features attacks their research vessel, the Long Ji. As the team battles for survival against this supernatural beast amidst a violent blizzard, Li Youyi displays unexpected calm and leadership.

The true horror, however, lies not just in the macroscopic threats but in the microscopic world. Inside a sacred Buddha Sarira, researchers discover a terrifying reality that shatters modern scientific understanding, revealing a hidden universe within a single grain. As ancient secrets surface and the missing eye of Li Youyi's artifact seems linked to this cosmic mystery, he finds himself at the center of a convergence between modern technology, ancient cultivation lore, and eldritch horrors.

With the boundaries between science and myth collapsing, Li Youyi must unlock the primeval laws governing reality to survive the awakening of forces long forgotten.