Lena Brusnikina's friend, journalist Lilya, is assigned to write an article about a superman operative. Lena suggests Artyom for this role. Khrulev's former teacher Fyodor Pavlovich comes to the department and asks him to find his stolen beloved dog Filya, an American bulldog. Artyom and Mukhtar are sympathetic to the veteran's request and decide to catch criminals "with live bait." To do this, Artyom turns to Lila, who also has a dog — a beautiful and thoroughbred Robin…
 

A maniac fan torments Masha Lemesheva, a talented blind singer, with threats on the phone. Mom's car goes to the police. They have a wiretap installed at their house, and Artyom and Mukhtar even stay in the apartment overnight. However, they fail to protect the girl from being attacked by a bandit in the entrance. Lena Brusnikina consults with a specialist psychologist from the Ministry of Internal Affairs and gives him a recording of a telephone conversation. The psychologist is sure that this is not a maniac, but a person pursuing quite rational goals.