In Berlin for a survey, a policeman returns to the college in which he spent adolescence. Here the group of friends was formed which once returned to Italy, gave rise to the armed struggle. He wants to understand how it happened, from what private badly the public was born. And he reconstructs the story of two brothers, their partnership and their competition, and the history of their women between Berlin, a roma livida and a small island lost in a lake. All in a scenario dominated by the militias of an authoritarian regime that has been found as a result of the dispute and terrorism. A novel rooted in the concreteness of places but fantastic as to the historical dimension. Reality didn't go like that, but so it could have ended.