Hasid Shlomo made a discovery in science: he found that stones can think and feel. In the home of his teacher, rabbi Yaakov, he recounts the scientific result he has obtained. His listeners, besides the rabbi himself, are Golda, the wife of Yaakov, and the young hasid Shmulik, his loyal friend. Shlomo's story is logical and convincing - so it seems to him. At the end of the conversation there is a hint of the grief in Shlomo's family.