Wugang City is a future city managed by the central system of the "Deep Blue Life Group". The job of data forensic scientist Lu Chen is to fill in the final digital epitaph for the unknown dead.
Until he discovered the same abnormal fluctuations in the data of a batch of "natural death" cases - in the last three months of life, the biological indicators of these people all showed a completely consistent decay curve, as if they had been preset for a countdown.
