Mariana is an 11 years old girl coming from Serpa who just moved to Lisbon with her father. The first days are spent in the city cleaning the house and knowing the new neighborhood, Entrecampos. After the first day of school, Mariana gets lost coming home and has to call her father for help. The next day, she becomes friends with a boy in her class, Nicholau, and his older brother, Simão. The two brothers invite Mariana for lunch and help her to get home.