Sima Bovina, an employee of a detective agency, is sick and tired of tracking down unfaithful husbands and looking for missing animals. And suddenly Lawyer Kostrov, her secret love, offers to work “for the defense” of his client. Well, how can you refuse him?! Svetlana is accused of murdering her husband, businessman Artemov. But the motive for the murder - the deceased's money - could not only have been hers. There were two more close women in Artemov’s life: his sister Vera and daughter Vika. During the investigation, Sima increasingly begins to suspect the mentally unstable Vika. And then, after the girl’s visit to the doctor, Sima finds him dead. Things are taking an increasingly bad turn.