Lu A-Yang's daughter, Lu Wushi, was severely injured in a car accident. When resuscitation failed, her soul was sent to Sahara Heaven. It is a digital world where everyone is equal and healthy; no product ever breaks or causes trouble; all service jobs are handled by digital people; the scenery is beautiful and the mountains and rivers majestic; the cities are fantastical and futuristic, and life is convenient and happy. Here, real humans live as if in paradise.
This outcome might seem acceptable, but Lu A-Yang refuses to believe his daughter died by accident. He secretly investigates the cause of her death, only to discover that Sahara Heaven is far from a flawless utopia. Money, status, and the black market are rife throughout it. What's more, his daughter's company was involved in a secret redevelopment project for Sahara Heaven, and she died suddenly just as it was about to succeed. Then he finds a string of code she left behind, pointing to the truth about Heaven... Uncovering its enormous secret, he experiences one fantastical scene after another.
The story unfolds around mysterious symbols of every kind, from world-famous paintings to ancient number sequences. Astonishing vistas and gripping tales abound along the path to solving the puzzles, drawing on a wealth of cultural fields...