The boss informs Smolina that he accidentally took the case of the "Faceless Ones." Sergei and Diana are looking for the missing toastmaster who is supposed to lead their wedding.

Gosha and Sergey go to investigate the missing dolphin. Ionov, Trubnikov and Fedyanin are trying to decipher the surveillance video related to the "Faceless" case.

After a successful operation, Gosha and Sergey hope to return to the investigation of the "Faceless" case full-time. However, Smolina gives them a new task: to deal with fraud in the housing and utilities sector. The heroes are skeptical about the case, but soon realize that a large-scale scam is hiding behind minor violations.