Juan, a thirty-year-old computer scientist, lives with anguish the first week of the lockdown in Madrid. Before all businesses close, he stocks up on food and become increasingly worried about the situation. In his case, an isolation in solitude, with his own relationship sinking down, his family away and nobody in the entire building he lives in, apart from a neighbor, his dog ... and a couple of tourists with symptoms of being infected. Social networks, collective applauses and the casual encounters with Julia, his neighbor, will not ease his anxiety. On the contrary: the reinforcement of the lockdown measures, the “news intoxication” and the cough he hears through the wall will lead him to a paranoia of unpredictable consequences. An intense and entertaining psychological thriller. An urgent, primary book, a revealing fiction in the midst of a crisis that no one saw coming.