Marinette and Adrien were both sad because high school would end in two days, both Marinette and Adrien's best friends would leave to go to their college. Marinette and Adrien were sad because no one that they knew was staying in Paris for college. Marinette and Adrien had to stay because they were the superheroes of...
Marinette thinks that today will be normal no being a superhero just a normal kid when her dad tells her something that will change her life and she will have to lie to her loved ones (friends and Adrien) to go meet someone in China. Master Fu has to give something to Marinette for her to continue to be Ladybug.