Olympia Grace Horan is the 17 year old troublemaker that Niall has for a sister. She tough, fierce, outgoing, and has a bad additude. After a hard year for her parents, they ship her off to Brooklyn, NYC. to live with her 21 year old brother Niall for a year, her senior year. Niall tries to break down her walls but she just pushes him out.When Niall introduces her to his friends will there possibly be enough warmth in her heart to love? What happens when the rebel is put in the big city?