An investigation rescues the case of the mutilated soldier that was important to help understand the functioning of the human brain. The young man was 25 years old when in the spring of 1938 on the battlefield, a bullet, most likely a shot from the Francoist side, pierced his head.
The wounded, however, miraculously survived without the need for special operations or care. When he regained consciousness two weeks later, that Republican soldier had undergone an astonishing change: under certain conditions he saw the world upside down.