Exactly what the headline says..
It's you're everyday "poor girl takes down rich lunatics at school" trope. This drama really didn't stand out to me and I kept having to search the characters names online to see who theybwere talking about due to the unmemorable characters. ㅋㅋㅋ
If you've watched "Class of Lies" you'd completely understand and foresee how this drama ends. Except the acting doesnt immerse you into the plot. While I will say is the killer at the end was unexpected, All of the other characters are flat and their hatred is directed at Kim Hye In but for no reason at all. Even as you finish the drama you dond understand why they all hate her so much.

A solid 6.5 on a good day :)