Where does the hole that our hero discovers next to the kitchen door in his new apartment come from? And even stranger - the hole seems to change its location, sometimes appearing on the floor, sometimes in the clothing bag, sometimes right in the wall... yes, it seems to be playing hide and seek! Until our hero manages to catch it and send it for examination in a lab. But there are things in life that cannot be explained... For those who doubt whether the hole really exists, a probing look and touch on the analog book is enough! For all little and big explorers, doubters, and philosophers.