She was in too much pain to realize that the impact caused her to detransform. The crowd stared in shock. Many gasped. Some screamed. Alya's phone clattered to the ground. Tikki cried. And Chat's expression had never looked more horrified. "...Marinette?"

Miraculous Day marks the anniversary of Ladybug and Chat Noir's first day on the job, so the students dress as Paris' beloved superheroes. A special dance is held for Ladybug and Chat Noir the same night where the two heroes must attend. But how will Marinette and Adrien handle their double-lives on and after Miraculous Day? [Now officially an A.U. set after season 1]