Kumiko Ijima is a very timid girl who happens to recognize a murderer still in pursuit at a park. With the help of her friend Kyoko Inaba, she warns the police about the wanted man. After trying to escape the police by car, the murderer crashes and ends up in the hospital. Some time later, a mysterious entity starts to terrorize the neighborhood in search of a girl who has the name initials K.I. and uses a red ribbon on her hair.

When the 5 richest and most powerful girls at an exclusive private high school are sent a death threat they decide to take matters into their own hands and bring divine retribution to their would be assailants. Using their collective resources and skills they show the terrorists that they messed with the wrong girls.