Yerkin tells a story about his mother-in-law. Once a mother-in-law came to visit Leonid Koroteev. She is a former headmaster, retired and decided to visit her daughter, son-in-law and grandson and granddaughter. She came, of course, with the best of intentions. But as a result of her visit, her daughter and her husband quarreled, the granddaughter broke up with her boyfriend, and the grandson refused to attend school, because after grandmother's demarches it was impossible to appear there - they would tease. In addition, the mother-in-law decided to force the whole family to eat only environmentally friendly products ...