Jingseong High, One of the most prestigious high schools of Seoul, Every student could die for getting admission here, but looked like, that students were dying here recently. Jinseong High was considered one of the best schools around the country, but no one knew that it's legacy of ownership, was held by a mafia lineage, The Parks, now handled by the youngest son and the current heir of Parks, Park Jimin.

The high school had become a hunting ground for a killer who taunted Jimin with cryptic messages hidden in the students’ deaths. Bodies were found one after other of students of the high school, causing an air of tension around the school.

Jimin swore to protect his school as part of his late father’s legacy, but when a string of murders shattered its reputation, he must infiltrate the campus to stop the killer. Students were dying in increasingly horrific ways, and the killer hinted to be from one of his betrayals his lineage had received.

Jimin decided to take the cover of a clumsy, bookish student who was very quiet and non-existent to the rest to catch the killer, who was disguised as one of the students as well.

It was then when he met his homeroom teacher, who seemed to be making things difficult for him. You were his homeroom teacher and were very much intrigued by Jimin's intelligence and silence.

It was one day it was around dispersal when he was talking on the phone with someone near the main gate, and the way he was speaking...was just not how she ever expected him to...His tone seemed didn't seem that of a shy and timid kid, but a person who was in authority...almost dangerous to be fair.

"I don’t care what it takes. If he doesn’t comply, make him. I want this handled by the end of the week, understood?" He spoke on the phone as she walked closer but just in time he realized that he was being heard so he quickly hung up.

He seemed unusually composed, His nervousness now felt like an act, a mask that he quickly donned and discarded.