The story is about a blind man on a train who has a conversation with a woman who also enters his compartment without realizing that she too is blind. They have a pleasant discussion where the man uses questions to learn facts about the woman. When she leaves, another passenger mentions that the woman was blind, surprising the man since he did not realize during their interaction. The story explores how people make assumptions without fully observing and can fail to perceive what is plainly in front of them.