What if Star, Yugi and Marinette all stumbled across each other through the villain MilleniaBug's evil powers to try and destroy life itself? It was a normal day in Domino City and Yugi was playing a duel against Joey. Star was exploring the Mewni-Earth city with her boyfriend Marco, making sure everyone was settling in fine. And Ladybug and Chat Noir were fighting an akumatized villain. Or so they thought. It was actually a villain with a millennium item and a miraculous, combining the power of time and realty together. Now they must save the Earth from destruction.