Gu Shan, a top physicist at the National Institute of Advanced Science and Technology, watched with his own eyes as his wife Siyu mysteriously vanished during a quantum experiment. She did not die. Instead, she was erased from reality completely, like a string of code.
The authorities declared her dead, and his colleagues called him insane. Only Gu Shan knew that Siyu was still alive. Somewhere in the cracks between dimensions, she was sending out a faint plea for help.
He wagered everything and defied every warning. In the shadows of an abandoned laboratory, he restarted the forbidden machine. At last, he received a response: a secret code that only the two of them could understand.
