In a condominium located in one of the many districts of the city of Naples, the events of the various residents of the respective apartments and of the people who perform their own duties take place there. Alternating, each of them realizes that happiness or sadness is only today; the title of the film in fact takes its cue from the factor that we tend to want to "steal" the possible happiness of the next day, hoping that it will be better than the one just passed; even if most of the time, however, it is only an illusion.