This is a Netflix drama series about school bullying and revenge.
The main character, Dongeun, gets bullied by her classmates, who are rich. The leader was a girl named Yeonjin, the richest one in the group. Not only getting hit, but she gets burnt all over by a curling iron, and being sexually harassed was also included. She tries to drop out of school by accusing those classmates but they get away easily. Dongeun, who is a daughter to a one-parent and is poor, gets no help from her homeroom teacher, nor from her mother. She tries to kill herself but determines to get revenge on them. She works and studies day and night, and becomes an elementary school teacher.
