Fresh graduate Jiang Jianxin is falsely accused and thrown into prison. To clear her name, she lies that she is the Sword Sovereign, unexpectedly awakening sealed memories. At the age of four, she joined the Sword Sect, and by eleven, she had already become an unparalleled Sword Sovereign! An apocalypse of contamination suddenly descends, with zombies and monsters running rampant through the city while mysterious forces stir among the supernatural factions. Wielding the divine sword Tangguang, Jiang Jianxin slays demons and monsters. She joins forces with Lin Xin'an, an esper with mind-reading abilities, as four mysterious childhood diaries conceal the ultimate secret of her origins. The Sword Sovereign returns to embark on a thrilling supernatural adventure in the modern metropolis!