The new generation of police officers in Hainan Province, including Lei Ming, Wang Lei, Xia Lisa, and Li Gang, have just caught a serial killer in their criminal investigation work. An emergency case occurred in Haicheng City, which occurred outside a certain kindergartenThe explosion, fortunately no one was injured, was just a warning from the suspect. The purpose was not in kindergarten, but to attract the attention of the police, and from it, the son of real estate owner Sun David was kidnapped. Lei Ming leads the team to captureWhile preparing to apprehend the culprit, it was discovered that the victim of this kidnapping case, Sun David, was actually involved in another civil case.