The sophon from the Three-Body plane and the two-dimensional solar system, for some reason, traversed planes and arrived in the Earth plane of 1981, merging with the consciousness space of the protagonist, Wang Jiankun. With the help of the sophon, a super artificial intelligence, and its ability to generate 3D models of objects it encounters and control the movement of certain elements, the protagonist develops the productivity and technology of the current plane, leading Earth's civilization to upgrade, and ultimately guiding humanity to the stars and the universe.