What's up with Santa Claus?

Two sides of a story in one book. The brilliant reporter Fanis the Owl is determined to solve yet another mystery, perhaps the greatest one from our childhood, and he has to do it in just one night! What’s up with this Santa Claus? Does he exist or not? And if he does, how does one man—even with flying reindeer—manage to deliver presents to all the children of the planet in one night? And that... chubby frame of his, how does he fit down the chimney? And another thing: how does he know who is naughty and who is nice? Christmas Eve has arrived, and Fanis won’t let it just pass by! We finally need to know the truth. After the successful books in the series "Fairy Tales... Otherwise!" (Little Red Riding Hood, Tom Thumb, and Once Upon a Time Twice), which were so beloved by children, Marina Gioti sets off on an adventure at the heart of Christmas. So, what do we tell our children when they ask us about Santa Claus? Because the weather changes, but coins have two sides too...