It seemed that spring for detective Andriana Karlsonovna would pass in calm admiring of flowers, but suddenly she receives an unusual order: the groom was killed on the eve of his own wedding. Now she has to find out who could commit a crime against a man who had no enemies. Maybe she would have abandoned this case, devoid of clear motives, but suddenly the police’s suspicion fell on an innocent man, prompting the detective to hurry... With tireless energy, the owner of the detective agency begins an investigation, and even investigator Kochubeev will have to come to terms with her participation.