Ramon's life seems perfect: he is married to Sonia, he is about to become a father, and he is getting ready to enjoy the most wonderful Christmas. But when a letter sent three years earlier reaches him on Christmas Eve, everything is turned upside down. Ramon discovers that Sonia has a niece no one knew about. Determined to do a good deed and give his wife the most beautiful Christmas gift, Ramon sets out to find the little girl. But things are not that simple, and Ramon once again finds himself...