The film takes place at Baekyeon High School, an all-girls school where students are forced to live under a cruel ranking system based on their popularity. Reputation becomes the criterion for assessing each student’s worth. Gradually, the students here face a war for position in school society, without regard for morality and cruel treatment.

Every month, students will hold elections for each other, and the results will determine their position in school society. Students with high scores will enjoy many privileges, while students with low scores (F) will become the target of bullying and violence.