More than thirteen years ago, an acquaintance of mine mentioned a story about being visited by beings from outer space. Sometimes he talked about things that didn't match his lifestyle or his knowledge at all. Over the following years, in random encounters somewhere on the street, he recounted the mysterious events in his life. At first I doubted it all. I do not deny that I was fascinated by these events. Since he is an absolutely simple-thinking person, I understand that all this can be based on facts. I have always nicknamed him Bertrand and so I name him in this book. The last time Bertrand told me about a mysterious meeting that took place in Zemplínská Šírava, I decided to write a book about it. Be that as it may, it is indisputable that this person could invent such a thing. His hard life wouldn't give him room for that, and besides, Bertrand was never interested in science fiction and related things. It took me a very long time to at least partially compose these illogical and torn thoughts that he entrusted to me. That's why I wrote this incredible story as much as I could.