Carla is a normal high schooler, until she is abducted by an organization called The Class. The Class trains children and teenagers to ruthless killers. Carla and her friends Kai, Carlos and Cahya get tested on magical powers, and they are the first people who succeed and get element powers. Carla's powers get trained to the point she is so good she can break out and save her friends. As she gets further, her greed grows. Will she save her lifelong best friends, or will she leave them in the hands of The Class and seek for freedom herself?