Summer holidays, the first great love and a family secret. When the 14-year-old Parisian Ali travels to the country with his little brother Selim on the bus to his grandparents, he is anything but enthusiastic. But Ali does not know yet that he will meet the handsome Réjane through his childhood friend Pierre and that his grandfather André is hiding something from the whole family. In the end it will be an unforgettable summer, but Ali will also have to grow up and take responsibility.