The episode begins in the manor of Agreste. Adrien was getting ready to go to school.
Adrien sees his father's workshop door open and sees his father leaning on a mechanism on the Emily portrait, revealing a hidden chest.
Gabriel leaves the room. Adrien takes the opportunity to enter and opens it, sees several objects belonging to Gabriel, photos of Emily and a book with a strange symbol.
"Did you know you had this in your house? "Plagg asks Adrien.
"I did not know. What is this funny book? " He looks at the pages that show the first carriers of the Miraculous. "It's the superhero book and Hawk Moth is inside, why is he in the superhero book? "
Nathalie calls Adrien.
"Adrien, you're going to be late for your new school, Royal Wood Middle School. "
"I'm coming. "Adrien hides the book in his bag and leaves.
The scene changes to middle school.
Marinette arrives as usual. She sees that the students are all talking about a girl named Lila.
"You knew Lila is friends with Prince Ali."
"She is Jagged Stone's distant niece. "
"His mother works for a famous broker and his father is a cousin of an actor. "One of the students said.
"She has already traveled the world and speaks 24 languages. "Another student said.
(Who's Lila?) She's going to follow Nikki who's always briefing on school news.
"Hi Nikki, do you know why everyone is talking about a girl named Lila?"
"Aren't you running? It is a new student who begins today. She will be in our class. "Nikki announces to Marinette.
"It seems that Lila has already acted in the films of Ace Savvy. It's not, I feel like I haven't seen it and yet I have listened to all the films. " Clyde said.
"Lila really did all of this? I have the impression that these are the lies that she made up. "Marinette does not believe at all what Lila is telling.
"Lies? Can't I see the point that she lied? "
"She's just trying to make herself interesting. "Marinette does not believe.
Both go to class. Lila continues to lie and lie until the break.
Adrien was reading the book he had lent to his father.
Lila walks up to Adrien.
"Adrien, are you reading?"
"It just happened ..."
"Is that the book of superheroes?"
Marinette spying on them. Tikki recognizes the book.
"Is this the Book of Miraculous?"
"The what?"
"This book contains the secrets of the Miraculous, their power and even those still unknown. I have to see it up close. " The ladybird Kwami approaches the book.
"Tikkii, wait!"
Back to their conversation ...
"I haven't told anyone but I have a great-great-grandmother who was a carrier of a Miraculous."
"Oh yes?"
"From the fox. "Lila mounts her pendant that looks like a fox's tail.
"Wow. It means you are wearing a real Miraculous. "
"Right. I can tell you more after school. At the park."
"Sure. "
Tikki had had time to see half of the pages, Adrien had put it in his bag.
After school, they go to the park.
Marinette and Tikki follow them. The two hide behind a tree in the park.
"Tikki, why are you obsessed with this book?"
"Someone I know is looking for him. "
"Can't he look for it himself? "
"He can't ... The most important thing is to get him back now." Tikki flies towards them.
"Tikki, wait! "
The girl with the blue hair tries to stop her Kwami but it's already too late.
Lila was lying about her superhero heritage from her great-great-grandmother who wore the Miraculous of the Fox.
"She's still lying! Adrien must not believe his lies. Tikki, Spot on! "
"Wait, I haven't -" Without finishing her sentence, the Kwami ladybug is sucked into the earrings.
Ladybug appears before them.
"Ladybug? "
"Hello miss liar. "
"Liar?"
"Yes, she lies a lot. Pay attention. This lie can be dangerous. "
"But ... But ..." Lila rains and leaves.
"Don't you think you're going a little hard?"
"I don't like liars."
Elsewhere, Hawk Moth senses Lila's negative emotions.
The scene changes to Hawk Moth's lair.
"Such a strong emotion. Ladybug, you just gave me an opportunity to create an ugly new power.
"In flight you, my Akuma. Go blacken that girl's heart. "
The butterfly flies out the window and goes to Lila.
The Akuma is absorbed by the pendant.
Volpina, my name is Hawk Moth. I give you the power of the Fox's Miraculous. Use your illusions to deceive your enemies. In exchange you bring me the Miraculous of the superheroes of Royal Wood.}
"Got it, Hawk Moth!"
Lila transforms into a fox-themed superhero. His weapon is on a flute.
"Lies always have an element of truth. "
Volpina jumps from roof to roof to the roof of the Royal Wood shopping center.
"Mirage!" She plays a melody and creates a mirage of Hawk Moth at the mall.
The customers panicked and ran away.
"It's Hawk Moth! Let's run away! " They all run for the exit.
"Do not have citizens. I, Volpina, will save you. "
Those who stay are filming the new superhero fighting Hawk Moth.
The man in the purple clothes runs away. Volpina is cheered by the crowd.
Then Volpina goes to see Adrien in his room.
"Lil- I mean who are you? "Adrien doesn't want to recognize Lila.
"Adrien, I didn't lie to you. I am a descendant of the carrier of the fox. "
"Lila?"
She nods to confirm it's her.
"Adrien, I will always be there for you. Not like this Ladybug. "
"Lila… I mean Volpina, I'm sure Ladybug wasn't thinking about her words."
"What, are you still on her side despite the way she spoke to me?"
"Yes, no I mean ..."
"She must go! "Volpina leaves Adrien's room to take revenge on the ladybug girl.
"Plagg, we have to help Ladybug. "
"It's a problem between them. I think it's better if she fixes it herself. "
"Plagg, Claw Up!"
Adrien transforms into Cat Noir and leaves the house.
The scene changes for a place populated by Royal Wood.
Citizens are targeted by motion-sensing missiles. If they move, the missiles will be launched.
Chat Noir arrives on the scene and calls Ladybug and Ace of King.
Ladybug and Ace of King arrive.
"Is she Volpina?" The ladybug girl asks.
"Right. She's a victim of Hawk Moth and I think I know where Akuma is staying."
"Now we know where Akuma is. How were we going to save people? " As requested.
While they were thinking, a pigeon was passing by, through people and missiles. "
"An illusion!" She uses her yoyo to dispel the illusions to reveal the villain.
"I still have other tricks up my sleeve. "Volpina creates several illusions of herself.
The Volpina attacked the three heroes. Volpina creates illusions over and over again, she hides among the fakes.
"She is among the impostors."
"How do I find her? "
"The easiest way would be to make them disappear or so. Lucky Charm! "
His power to make a chocolate bar appear. She opens the packaging.
The aluminum foil reflects the sun's rays and flashes the scythes to reveal the position of the real one.
"There she is!"
Volpina was going to play on her flute. Ace of King throws one of his cards at the villain who loses his weapon.
Volpina is disarmed and the three heroes stand against one another.
Using this strategy, Ladybug retrieves the pendant and breaks it.
Capture the black butterfly which turns white afterwards.
"Pound it!"
After this incident. Lila continues to lie.
The scene changes for Royal Wood Middle School.
Lee is in front of his locker looking at his Snake Miraculous. Luckily he was alone in the corridor.
"Sass, do you remember the day I found you?"
"Yes. Like it was yesterday..."
The flashback begins ...