On her first day of high school, Rinka is hit by a vehicle while crossing the street. She awakens to find herself at the mysterious NEVAEH Academy, a bizarre high school she cannot leave, and which serves as the battleground for the rebellious Bad Apples and the white-masked Prefects. Rinka is desperate to learn whether or not she will be able to return to her old life, and which side she should ally herself with in order to do so.