First of all, the story in the cartoon takes place in the romantic city-Paris. Marina and Ai Jun are classmates, the children chosen to save Paris, the superheroes in the film. Every day, we will fight the villains to protect this beautiful city. Marina can turn into ladybug Reddy with a pair of magic earrings, and Ai Jun can turn into a black cat Noel with a magic ring. They will use their magical power to protect mankind from fantasy adventures.

The content of the story is the same. Superheroes need to save the so-called "bad guys" who are possessed by black butterflies. These bad guys are essentially people around superheroes.

As an possessed person, he has always existed in the whole narrative world, in the life vision of the audience and superheroes. Because of the power of luck, the destructive buildings made by bad people will be reset and repaired by this power, and those who are possessed with evil will not be accused by society-on the contrary, it will trigger a new black into a butterfly.