The most important things in Mikołaj's life are: mom, dad, school and friends - a bunch of inseparable buddies, without whom everything else makes no sense. So when the boy's dad gets promoted and the family has to move to the far south, Mikołajki falls into despair. Because how can you imagine a world without your best friends? No Alcesto croissants, Ananias glasses, Cleofas antics - no common mischief, games and jokes? It just can't be. Therefore, in order to prevent a misfortune and influence the parents' decision, Mikołajek and his team set off on a search for the lost treasure. He believes that the wealth found will allow him to stay at home and stop the inevitable move.