Hiroshi Takahashi, a young office worker in modern Tokyo, leads an ordinary life, immersed in neon lights and the constant noise of the city. One day, while walking home after a long day at work, he receives a mysterious notification on his smartphone: an app called "The Game of the Net." Curious, Hiroshi decides to open it, but as soon as he interacts with the app, he is suddenly teleported into an unfamiliar digital world, a landscape made of codes and fluorescent lines.