Murder at a wedding! The identity of the deceased has not been established - because, as it turned out, no one invited this person to the celebration. Only a pack of cheap cigarettes was found on him... The police disown this case, writing it off as a "dangling case." And then the father of the bride turns to... the owner of the Chaika restaurant, Larisa Kotova, known in the city as an experienced and extraordinary detective. Larisa takes on this case, involving her friend investigator Kartashov in the investigation. And now it’s not the private detective who helps the police, but the police who helps the private detective - and the work begins...