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.

As members take the entrance exam for the elite class, they feel troubled by the questions; the first request has been made to them.

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.

The members find out that there's a clue inside an eraser so they check the footage on the surveillance camera.