In the purposeless and parasitic - according to Ferdinand Kiepski - the life of Grandmother happens something that may contribute to a wonderful change in the future of the family. Wonderful, in the literal sense of the word, because the awakened from the dream Grandmother Kiepski sees a strange sign on the wall in the large room. This sign can only have one explanation for her. Behold, the heavens have decided to appear to Grandma in a wonderful revelation. Within a few hours, the poor apartment turns into a place of pilgrimages of various individuals. The phenomenon comes to see even the parish priest whose vocation is put to a severe test, as Ferdinand simultaneously invents a wonderful invention. Unfortunately, the parish priest will be one of the first to feel his actions on his own...