A modern city is gradually showing "abnormalities": intelligent systems occasionally operate on their own, strangers' secrets intertwine and emerge, and reality and illusion continue to intersect. Psychological counselor Ye Chengxi gradually uncovers the secrets of the "collective subconscious" in the underground cracks of the city. Luo Silian discovered a forbidden space in the old city during an urban planning project, Fang Chongan accidentally detected tampered data in the smart network, and the bizarre news reported by Chen Jingya turned into personal experience step by step... Each story line points to the deepest mystery of the city: What do people live with under the reinforced concrete? Everyone is lost and finding their true self at the same time.
