Great Britain. Mia is a fifteen-year-old with an impetuous character, no friends, a mother of the same age, except for the registry office, a little sister specialized in foul language and a great passion for hip hop dance. She always gets into trouble and has been excluded from her school. Her life is turned upside down when one summer day her mother brings home a new boyfriend, the mysterious Connor, who promises both of them to change her life.