In the modern immortal city of Lingyue, the operation of the entire city relies on layers of overlapping array networks. Hotline dispatcher Han Buchi is not good at high-strength spell combat, but excels at dissecting fault clues from residents' vague repair reports. Teaming up with grassroots array master Mei Zhaodeng, he builds a fault history database through one minor repair report after another, leading to a clash of philosophies with Zhao Qianji, the engineering manager who pursues centralization and high efficiency. When the super central main array encounters an extreme thunderstorm and the whole city grinds to a halt, everyone relies on the partitioned backup system to explore the urban survival path where efficiency and risk redundancy coexist.