On a summer day in 1798, a woman collecting mushrooms in a French forest is startled by what appears to be a large animal moving in the brush, grunting and sending leaves flying into the air. After she runs off, it reveals itself — not as the fearsome beast the woman imagined, but as a boy of eleven or twelve (Jean-Pierre Cargol), naked, long-haired, covered in filth and moving on all fours. Human though he is, he leads the life of a wild animal, and soon he’s captured like one, chased by dogs and smoked out of a hole in the ground by a group of hunters. Dubbed the Wild Boy of Aveyron, he becomes an object of curiosity to the public at large and the medical profession in particular. Because he’s unable to speak and has limited hearing — he turns around when a nut is cracked behind him but doesn’t react when a door slams — the boy is placed in an institution for the deaf, where tourists come to gawk at him and the other children abuse him. Appalled by these conditions, Dr. Jean Itard (François Truffaut) proposes moving the boy to his own home on the outskirts of Paris. There, with the help of his housekeeper, Madame Guérin (Françoise Seigner), he intends to educate him.