Among the most important activities of the FSB are counterintelligence, the fight against terrorism, political and religious extremism, the investigation of the largest scams in the economic sphere, the protection of borders and the fight against drug trafficking. The heroes of the series "Special Group" are engaged in such cases. The series was created in close cooperation with the FSB, which gives the characters' actions maximum authenticity. Many stories are drawn from real operations carried out by the FSB.