The TV series "Sluchajnyj kadr" is a Russian detective thriller about the investigation of a nightclub arson. Nina Nesterova serves as the senior investigator, and this case falls to her department. The woman is almost certain that the prominent entrepreneur Boris Bobrov is responsible for the fire. However, she is unable to prove it. She invites a talented colleague from the province, Nikita Komarov, to Moscow, who can unravel this complex puzzle. But as soon as the man takes on the case, someone kidnaps his fiancée.