Within forty-eight hours after a person's death, the brain's consciousness can be uploaded to "Xiangzhong" - a virtual world connecting the living and the dead. The dead "live" in digital form, and the living can meet them through devices.
Lin Xu's sister Lin Nian died. There were only ashes at the scene, no brains.
As the youngest PhD student at the Institute of Brain Science, Lin Xu knows what this means. He did not accept this conclusion and took the initiative to join the Investigation Bureau and became the technical advisor to captain Fang Duo. Fang Duo is a notoriously playboy detective who handles cases unruly but has the highest crime detection rate all year round. One silent and restrained, the other cynical, this mismatched pair began to pursue a series of cases related to the "Xiangzhong" technology.
The clues point to a mysterious scientific madman and an illegal experiment that skirts the edge of the law. As the investigation deepens, Lin Xu discovers that his sister's death was no accident, and behind the truth lies a cruel choice about obsession and farewell.
The elephant represents the world of the living, and the elephant represents the retention of the dead. And outside of Xiangwai - no one knows.
Purpose: When technology allows us to remember the deceased, true farewell becomes the most difficult issue.