Nath is a genius; Tanguy an idiot. Any such extremes disturb people. In recognition of this fact, a pharmaceutical corporation is undertaking experiment with a new drug, normality pills, that would move them both toward the norm. It is decided to put them in contact using e-mail exchanges. Those responsible for the experiment will monitor the exchanges. So a deep friendship evolves between two individuals who normally would never have even met. Their dialogue is moving right up to the terrifying conclusion. One of the themes of the narrative is the loneliness of the extremes.