DETRÁS

Year 1972. A young girl posts a letter into the mailbox. Few days later, when the postman is doing the delivery, the letter falls behind the mailboxes between them and the wall and gets stucked in there. Year 2005. The lost letter is found behind the mailboxes when these are removed by some workers that are refurbishing the hall. Mercedes, the letter's adressee, opens the envelope and finds out that it’s an anonymous letter with some information that will change her life retrospectively.