Sweet Revenge// Ladybug

The events that happened are from chapter 24 of season 3

Marinette is expelled from the institute for what happened with Lila, her friends turn their backs on her, alone and without anyone who believes her, she asks her parents to change schools, but not every school asks to be transferred to the same institute as her friend Kagami. That's where she plans her sweet revenge

(In this universe there are no kwamis)