You were a quiet high school student. You had no friends, only enemies. The children bullied you every day. Either your backpack will end up in the trash, or your head will be in the toilet. Teacher Kang Taehyun was a math teacher, cold but handsome. All the girls were in love with him.

One day he walked past the storeroom and heard the voices of the students laughing. He went inside and saw how they were beating you, dousing you with milk and filming it all on video.