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In 2026, Lingxi AI, which relies on digital fruit fly brain technology, was born. With its characteristics of "autonomous interconnection and life-like intelligence", it swept the world and became the "smart companion" of hundreds of millions of families. However, a sudden "big event" tore apart the illusion of this technological carnival. Four ordinary people with different identities, China's national security forces, the multinational technology giant "Future Technology", the resurgent Japanese militaristic force "The Society of Swords", and the intelligent "Ling Xi" who is difficult to distinguish between friends and foes. Where is human civilization headed?