Xiao Qing's desperation to save her sister collides with a world that has forgotten what salvation even means. The film doesn't just pit her against Fahai, it traps her in a city designed to erase memory itself, making every step toward her goal a step further into forgetting why it matters. A mysterious man with no past becomes her only anchor, until you realize he might be the reason she's trapped at all. The film's real cruelty isn't the action; it's the slow understanding that love and duty might not be enough to survive a world built to destroy both. This is a film about sacrifice that refuses to comfort you with the idea that sacrifice ever saves anyone.

Five centuries after the snake demon Xiao Bai fell for the human Xu Xuan, the two meet again, but the monk Fahai ruins their second chance. Xiao Bai ends up sealed beneath Leifeng Pagoda, and her devoted sister Xiao Qing is thrown into the Asura Realm, a dystopian city where obsessed souls from every era battle monsters to survive. With her hard-won spiritual powers gone, Xiao Qing turns to new weapons and technology. Beside a masked stranger who cannot remember his past life, she fights to escape and rescue her sister in this action fantasy film.