There are two, so to speak, parallel worlds, ours, modern and the second - fabulous. The definition of fairy-tale is conventional, in the same way our world is called hellish there. There are several doors between the worlds, which are carefully guarded on both sides. But on both sides, historians and other specialists work in the parallel world. For what? Who knows, maybe they are studying something, or maybe they are just watching the development of a world that is not like their own.