In the future era, the world's first neuro-immersive science fiction game "Star End" is launched. An ordinary girl, Hui Hui, accidentally awakens to abnormal powers and can see the overlapping gaps between the game's underlying code and the real world. The identity of the mysterious player "Yu'er" is a mystery. Sometimes she is cold and distant, and sometimes she sacrifices her life to protect him. As the game copies continue to collapse, Huihui discovers that the so-called virtual world is actually a prison of consciousness left behind by civilization. The two work side by side in interstellar battlefields, data abyss and real-life conspiracies to uncover the truth across galaxies. They also confirm the only bond between each other between codes and heartbeats.