Zhu Changan, the crown prince of Longsheng Group, was kicked out for reporting his father online. Soon after, he died of carbon monoxide poisoning in his car. A "poisonous" yoga ball was found in the trunk. Was it suicide, murder, or an accident?
One case was unsolved and another occurred, and the suspects died mysteriously one by one. The question faced every time is: suicide, murder, or accident?
Suo Lang, deputy captain of the criminal investigation detachment who mysteriously landed in the air, Ma Tianhao, a funny forensic doctor, Zhong Ming, a technical nerd who dreams of being a criminal police officer, Yuwen Xingxing, a technical detective who loves his wife but doesn't like to work overtime, and Su Yulin, a forensic anthropologist with Asperger's syndrome, let's see how they work together to solve this series of mysterious cases.
