Deus Ex Machina

A young adult goes looking for his biological father. He'll understand, when he finds out, that his daddy never ran away as he was told. His father suffers from a very little-known disease: Prosopagnosia, an inability to recognize faces. Even if he would regularly meet his son in the street, he would be unable to know who he is. In spite of everything, father and son will end up and help each other.