The Russian detective series "Unicorn Exposed" tells the story of a young woman named Elizaveta Batalova. She is deeply concerned about a unique engraving of a unicorn that disappeared without a trace many years ago. Elizaveta delves into provincial archives, trying to find out where the trail of this rare artwork went cold. Meanwhile, in the capital, someone ruthlessly eliminates the owners of other engravings with similar themes. Some time later, a girl who bears a striking resemblance to Lisa dies.