After the heroes de-evilized an unseen villain, Marinette's classmate, Rose Lavillant, is excited about Prince Ali's visit to Paris, but is caught at school spraying perfume on her fan letter and using a cellphone in class. Tikki feels ill, so Marinette plans to take her to a healer, but when Marinette trips on the stairs, Tikki is picked up by Chloé, who plans to give Tikki as a plush toy gift to Prince Ali. Chloé tears up Rose's letter, telling Rose that Prince Ali has no interest in her. Hurt, Rose succumbs to Hawk Moth's akuma and becomes Princess Fragrance, a corrupted noble whose perfume spray makes people serve her, and desires to have Prince Ali for herself. The un-transformed Marinette must recover Tikki and stop Princess Fragrance from taking over all of Paris.
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