Cha Suwei found that the orphanage was not in good condition, so she took the patrol room to provide support. The loving Che Suwei played with the children and found that Lu Shijun had recently provided some supplies to the orphanage. Che Suwei's impression of her began to change. Another murder case caused by "vampires" happened, and the victims were also female officials in the concession. In order to draw out "vampires", Li Simin and Kang Yichen disguised as officials and patrolled the streets. But the vampire attacked Lu Shijun, who was dating Cha Suwei. Lu Shijun lost too much blood, and during the rescue process, Che Suwei realized that she still loved him. Li Han, the chief inspector of the concession, scolded Gu Yuankang for his poor handling of the case and forbade them to investigate the case. Gu Yuan and Kang Yichen used their wisdom to join forces with Cao Qingluo to get him to lure Li Han away. A minister Gu Yuankang went to the crime scene to investigate and found clues to the orphanage. Gu Yuan and others went to the orphanage to investigate, Li Han came to stop it, but at this time Gu Yuankang had already discovered the suspect.