(If you didnt read Percy Jackson's Twin Sister yet, do not read this part!)Marina Jackson is back, and this time she has new powers. Jack Frost, her new mentor, has to teach her how to master her brand new powers in Night Academy, where she'll meet new people, new threats, and new drama! Not only that, problems start to arise in Camp Ultimate. Will Marina be able to master her power? Will the problems in Camp Ultimate stop? Or will everything fall apart?