Private detective Tatyana Ivanova can’t understand collectors’ passions. Even harder for her to believe is that, because of some scrap of paper called a “stamp,” people can be destroyed cold-bloodedly. However, while investigating the theft of a rare stamp from 1951, Ivanova is forced to admit: it happens. Moreover, very quickly she realizes that they’re planning to use her “in the dark.” And that’s exactly what Tanyа really doesn’t like. So she decides to conduct her own investigation…