Based off of the anime Code Realize Guardian of Rebirth, The League of Extraordinary Gentlemen, Dracula, and Frankenstein.
Sealed away in a mansion is a beautiful, innocent, seemingly emotionless, doll like girl who has no memory of her life. All she knows is her name is Marinette and that she is a monster who must never touch anyone because she will burn them this is because her heart is a jewel of great power which is surrounded by a deadly poison. For many years she sleeps alone in the dark until Chloe Queen of France hears that the most beautiful jewel in the world is in that mansion so she sends the royal army to retrieve her. But they're not the only ones who know of it, also wanting the jewel is the dashing, handsome, and roguish gentleman thief Adrien Agreste and he plans to steal the jewel.
Both him and the royal army are shocked to discover that the jewel they seek is the heart of a young girl who's dangerous to touch. Though the army gets to her first it's Adrien who manages to steal her away to the mansion of Saint Ivan where she meets inventor Nathaniel Krutzenberg who falls for her at first sight, scientist Dr. Max Keante, count Saint Ivan, and former vampire hunter Nino Lahiffe. While they merely went after her for the jewel they soon learn that there is much more to her heart than just a pretty, valuable, little bobble.
Meanwhile Queen Chloe hires detective Kim to find Marinette and capture her but also searching for her is the mysterious Hawkmoth and his army of obedient slaves who plan to use her for a an extremely dark purpose.