While vacationing in Bavaria, private detective Tatyana Ivanova witnessed the persecution of a noble count, saved him from a killer several times, but alas... Returning to her homeland, Ivanova learned from the noble German’s fiancee about his death. Tatiana agrees to investigate the crime on behalf of the inconsolable Sigrid. And a day later he meets his acquaintance in a restaurant, who reports that he has become a count... and gives the name of the deceased groom Sigrid...