The Laïtes tribe lives on the site of "Plaça de Sant Jaume", today the square at the heart of Barcelona's old city. Their world is narrow and limited: they don't want to expand their horizons, and they cling to old beliefs and superstitions. The Lacets are their neighbours, a tribe made up of Laïtes who do not accept the murky mystifications of the Laïtes' witch-doctor. Laïtes and Lacets must overcome years of distrust and incomprehension, and unite their forces to face a new and imminent danger: the Barbarites...