Forensic doctor Lin Wu discovered that metal debris in the deceased's ear canal during an autopsy in a fire were the same as the evidence of his father's mysterious death ten years ago. During the investigation, she suffered an explosion that left her deaf and speechless, but she awakened her extraordinary visual memory ability - she was able to reconstruct the crime scene through the residual traces of sound waves.
She formed a special partnership with the criminal police captain Chen Mo and discovered that there was an infrasonic murder conspiracy hidden behind a series of "accidental deaths". The murderer used sound waves of specific frequencies to induce heart disease and create the illusion of fire. All the deceased had participated in an acoustic engineering tender. As the investigation deepened, Lin Wu discovered that his father's research partner Xu Zhongnian was the real culprit. He killed many people due to patent disputes and even implanted a sound-sensitive gene into her when she was a child.
In the final water tower showdown, Lin Wu used the phase canceller left by his father to kill the murderer. The truth was revealed: Chen Mo's sister was the first victim, and Lin Wu's mother also participated in genetic experiments. After the case was concluded, Lin Wu established the first "Silent Criminal Investigation Team" in China, specializing in sensory evidence chains, and continuing his father's scientific ideals in another way.
