A book about young people who suffer, although they are not always aware of it. They suffer not because of the usual existential crises that characterize youth, but because an annoying visitor, nihilism, wanders among them, infiltrates their emotions, confuses their thoughts, extinguishes prospects and horizons, disappoints their souls and withers their passions, making them "lifeless". Families worry, schools no longer know what to do, and only the market is interested in them, to lead them to the paths of entertainment and consumption, where what is consumed is not so much objects, but their own lives. Is there a way out? Can we kick out the annoying visitor through the door?