A story about the past reflected in the present, about a father and son who did not see each other, but coincided in the main thing, about ineradicable curiosity and the search for the mysterious, who discovered more than they dreamed of, and about other adventures with a description of amazing events in an ordinary school and on the border of worlds, where heaven kisses earth, and also about eternity, about glory, about good and evil, about love and hate, about friendship and unfriendship.