The story takes place when Marinette, Adrien and all of their friends are still in highschool. Luka & Alix are the only ones in this story who have been held back a grade, and students like Marc and Zoe have been promoted to junior year due to amazing grades. Every mutual student is in the same grade, they're all juniors. Hawkmoth has long been defeated, but Mayura is nowhere to be found.