Girls' High School Mystery Class

On the first day of school, five new students are asked by a forgetful teacher to find a password for his laptop.

Pizza that was left in the teacher's office disappears and the suspicion points at the five members. To prove their innocence, they go around and investigate others that were in the teacher's office.

As the five members got the door open after many attempts, they witness students bullying a classmate.

The five members find out that all the secrets of this school have something to do with the elite class and hear that someone has cheated on the last entrance exam.