In this screwball and charming comedy, the story starts in an unspecified point of Spain's geography named Fuentejuela de Arriba, a so small mountain town with a so big problem: a population of 16 people, all them aged, without young ones nor children. Campello's, Fuentejuela de Abajo's mayor, appears to make a warning: if the population lows to 15 or less for the incoming census of the region, Fuentejuela de Arriba will disappear to be annexed to Fuentejuela de Abajo as an only one town, for desperation of their inhabitants denied to see the town as part of Fuentejuela de Abajo due to their eternal rivalry.