Every year around Sweden, hundreds of Swedish families get caught up in the clutches of greedy and unserious construction companies. The ruthless construction villains leave families with children in half-finished ruckus while sticking with the families' life savings. Now it's time to put an end to the villains. In Byggfällan, Renée Nyberg enlists the help of a lawyer to hunt down the rotten construction companies, while the families get help from TV3's construction and interior design team to transform the half-finished buildings into cozy homes where children and adults can finally move into their own room.