-Gabriel agreste and all enemies of the miraculous were defeated. Ladybug and Chat noir had saved the day.
-The Order decides that now that the miraculous of the box have been fully returned. It is time for the miraculous to be taken back.
-Of Course, Su-Han (the monk of the order that appears in season 4). Takes the miraculous back. Before Ladybug and Chat noir even knew of the other's identity.
-Su-han uses his knowledge to clear Ladybug's memory of her time as a hero and her Guardian knowledge. Though thanks to experience, he didn't completely wipe her history. Just anything related to the miraculous. Perhaps out of kindness, to let her have a normal life.
-He didn't bother doing the same thing with Chat noir. He knew that Adrien didn't have any secrets that the guardians would keep hidden. He was no threat in their eyes.
-Though this left Adrien, feeling alone. Both his parents gone, one in prison and the other..., his kwami gone, and he never even got to know who his partner was. His friends slowly drifted away, some intentionally, others because life. But who would really give a chance to the son of a terrorist?
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-25 years later. Marinette was a successful Fashion designer. Her brand 'Miraculous' was established and she had 3 lovely children. She was happy enough, part of her felt like it was missing, but she simply passed it off as nothing but a midlife crisis deal.
-A giant Black cat monster attacked Paris. Something like that hadn't been seen since the defeat of Hawkmoth. Ladybug and Chat noir had long retired.
-Marinette worried for her kids, hoping that she could get to them.
-Meanwhile, Emma, the oldest child of Marinette found a box on her bed. She opened it and found herself staring at a red creature with Black spots.
-"Hi Emma, I am here to help you become a hero."
-The young teen rushed to face the cat monster, and encountered a boy with a similar style though looking more like a black cat.
-The two decided to work together to stop this strange monster.
-Meanwhile, in a dust filled lair with only a window to let the light in. A peacock broach and a Butterfly pendent adorned. A man smiled sinisterly.
-"Well this certainly brings back memories."