“One day, Luz, a secretary in a construction company, finds in the ruins of a house a bag with 20 millions pesetas in the old peseta bills. She keeps it a secret, but four quite needy friends manage to find out. As they are told that pesetas can be indefinitely exchanged for Euros at the Bank of Spain, they decide to change a few bills just to see if it really works. They get easy money right away. So everybody returns to Luz hassling her with more money needs. But Luz is worried that the money could be the life savings of some old man and decides to find out who’s the owner. What none of them can imagine is that the money doesn’t belong to any old man but comes from a darker source."