In the universe, there is something called "Light Veins", which are like invisible threads that can connect civilizations on different planets with each other. Earthling Lin Ye and his friends followed the light pulse on the interstellar road.
At first, they just wanted to let the earth communicate with other planets, but they didn't expect that many secrets would be involved. There are civilizations like Sirius and desert planets that can get along well with the light veins, and there are also gravekeepers who are affected by the "shadow" of the light veins - dark matter. They always confront the light veins civilization in the beginning.
After slowly exploring, everyone discovered that light veins and dark matter are not actually enemies. Just like sound needs to be quiet to listen well, they must exist together. Moreover, there are older secrets hidden in the universe: every civilization is a seed in the "garden of the universe". It must not only inherit the things of its predecessors, but also continue to pass them on.
Lin Ye and the others took their partners from different planets to resolve the conflict between light veins and dark matter, while also dealing with the Splitters who wanted to destroy everything. They gradually understood that the universe is like an unfinished song, and each civilization can add its own notes. In the end, what they have to do is to continue to search for more "cosmic seeds" with the power of light veins and dark matter, so that this song can sing further.
