A tsunami floods A Coruña, that's why all the population has to move to the metropolitan area, leaving the prior A Coruña abandoned; to make the few people remaining there leave their homes government decrees zero zone and they cancel all the energy supplies. However, this few people gets by with colourful small business that attract tourism and recovering things that had been left there under the water. Xiana belongs to this last group and she earns a life with the resources the new situation offers. One day seeking for customers she bumps "by chance" into Ramón, an old boyfriend. Ramón is a policeman that is in the city on vacations with some job-partners. He invites Xiana to their table and drops, "by chance" again, the Universal Savings Bank's strongroom legend. The legend says that in the basement of the Universal Savings Bank's head office, now flooded, there are loads and loads of money waiting for someone to take them. Xiana laughs at them, she says it's a story for tourists, but Ramón insists until Xiana gives in to the temptation of checking it.