In the prosperous Jianglong City, women and children disappear every day, and strange clouds gather over the city. A puzzle piece was sent to the police station, and the clues pointed to the recent frequent disappearances. The police discovered that this was not an ordinary puzzle piece but human skin, and it came from the murderer of another case. Is it the murderer? Or the victim? Who is the perpetrator? Yu Jing, the leader of the second serious crime team, grew up among gangsters and made jokes on weekdays, but when it comes to serious matters, he immediately becomes serious and leads his men straight to the scene. He discovered that the clues in the case were very similar to an old case from fifteen years ago. This case was inextricably linked to the major child abduction case fifteen years ago. In order to solve the case faster, the city bureau called in a helping hand. They heard it was the forensic section chief from the city bureau next door, “Lu Yidao”*, who claims to be able to make the dead speak. Accidentally, the two met at the crime scene, and both thought the other was a gangster. After a few rounds of fighting, both of them were impressed. Even if the misunderstanding was resolved, the relationship was still forged. The appearance of mysterious puzzle pieces actually formed a mysterious sun totem. Although the two of them started fighting each other as soon as they met, in the face of the sudden case, they made a tacit agreement to temporarily reconcile and joined hands to face the sea of blood and avenge countless dead souls. “The sun means rebirth and burns everything. I am willing to use my mortal body to withstand all kinds of difficulties and dangers. Even if it turns into embers, I will have no regrets.” “Even if the night is endless, as long as faith never goes out, I will be the fireworks that light up the way forward.” [Gong, the leader of the crime team with explosive combat power and intelligence, vs. Shou, the forensic doctor who looks weak but actually punches.] *Lu Yidao 陆一刀: One sword Lu; it might be a nickname for Lu Yan.