The protagonist, Lu Cangxuan, appears to be 28 years old, but has actually lived for more than a thousand years. He was once the "Northern God of War" who spanned all the worlds. Three hundred years ago, due to the betrayal of his best friend and the encirclement and suppression by various forces, he was struck by nine seals. His cultivation fell to the stage of refining energy, and he was exiled to the modern city.
Although the combat power is temporarily lost, the God of War's vision, combat experience and huge knowledge base are still there, and he can use his low cultivation to implement ingenious tactics.
Hidden in the urban background are cultivating families, ancient sects and supernatural organizations, forming an undercurrent of the inner world.
Lu Cangxuan works as a librarian in a modern city, repairing ancient books while repairing his cultivation. However, he discovers that behind the betrayal was the purge of the "Guardians" by Heaven once in a thousand years.
