Melanie is everything you'd ever want to be. She knows everything and can do everything. And by everything... I mean EVERYTHING. - Her twin sister Mariah is pretty smart and talented as well but not as ridiculously as Melanie. Mariah has a few rare gifts that Melanie doesn't quite possess. - Both girls are almost completely identical physically and as far as their character traits and interests. But the only thing is, they can't figure out if their gifts are truly gifts, or are they curses?