Qi Hongyu, a versatile medical examiner, was suddenly involved in a murder case and was suspected of killing his stepfather in the interrogation room, the policewoman held the report and said blankly: "after investigation, your stepfather is not your father." Qi Hongyu rolled his eyes and said, "nonsense!" "you have the same genes, so he is your brother, the kind of twins." Qi Hongyu: "funny? He's 25 years older than me!" amid many doubts, Qi Hongyu decided to use his scalpel to intercept silent testimony, sweep through the fog and find out the truth!