A signal was received at the remote security control panel. The police are detaining a thief at the door of the guarded apartment. They find a bag of gold items on him. After interrogation, he himself shows where he got them. It is the apartment of Zoya Malinina, an employee of the Yakhont jewelry store. She did not report the loss. The head of the department senses that this is not a simple case. The investigator, under the guise of buying a gift for his subordinate's wedding, meets Malinina...