Young doctor Tang Cheng is abducted on his way home from work. His kidnappers aren't human: they're artificial intelligence!
A string of murders that seems to be predicted in advance: every victim forecast by the AI has a close connection to Tang Cheng.
From that day on, Tang Cheng is drawn into a shocking conspiracy brewing in the dark.
Bizarre accidents, tangled clues: he becomes more deeply entangled in the case with every step...
Who is the fourth target, the one the AI can't identify? What is the mastermind's motive?
Just as the truth comes to light, Tang Cheng is horrified to discover that everything points to... himself?