(Y/n) exited her dorm as she was on her way to her new school. (Y/n) is an exchange student from Italy, she saw an opportunity to have a fresh start and meet new people. She even thought this exchange program could help her fulfill her dream of becoming a famous songwriter and singer, but she has to one flaw, she's shy about singing in front of others.

As (Y/n) was walking to the school, she noticed an old man having trouble picking up his groceries. Without hesitation, (Y/n) quickly ran up to him and lend him a hand.

"Thank you very much, young lady." The old man smiled at her. "It's no problem, sir." (Y/n) hands him the groceries. "Have a nice day." (Y/n) waved as she enters the school. The old man smiles at her as he held a mysterious box in his hand. He walks away casually as he whistles.

Just as (Y/n) enters the school, someone accidentally bumps into her.

"Ouch!" They both said in pain. "Oh my gosh! I'm so sorry!" A girl with blue hair and pigtails apologized as she helps (Y/n) up. "No, it's alright. I didn't know my way around here." (Y/n) said.

"You're new here, aren't you?" The girl asked.

"Yeah, my name is (Y/n)." (Y/n) had her hand out.

"I'm Marinette."

"Marinette, can you point me to the principals office?"

"Sure, just head upstairs and it's that door."

"Thanks, Marinette. See ya!"

"Wait!" Marinette gives (Y/n) one of her macaroons. "For bumping into you." (Y/n) smiles as she happily accepts the treat.

(Y/n) walks into the principal's office, Mr. Damocles. He hands her the schedule and map of the school. She thanked him and walked to her first class with Miss Bustier. Her teacher saw her and instructed her to wait outside for an introduction.

"Class, today we have an exchange student with us. You may come in now." Miss Bustier said. (Y/n) enters the classroom. She saw Marinette and gave her a wave, which Marinette happily replies.

"Everyone, this is (Y/n)." Miss Bustier introduced. "Hi." (Y/n) greeted shyly. Everyone greeted her in return. "(Y/n), why don't you say something about yourself?" Miss Bustier smiles.

"Well, I'm from Italy and I came to the exchange program to help me achieve my dream of becoming a famous songwriter." (Y/n) explains. Everyone gave her positive remarks. "Thank you, (Y/n). Now please have a seat next to Nathaniel over there." Miss Bustier instructed.

Nathaniel raised his hand to help (Y/n) know who he is. The class began and (Y/n) was beginning to feel more comfortable in her new school. She even made friends with Nathaniel as they were working together in class. The class finally came to an end as everyone was heading towards their next period.

"Those of you who have P.E., Mr. D'Argencourt is expecting you at the stadium. The rest of you can head over to the library." Miss Bustier announced.
"Kim!" Ivan suddenly screamed. "Ivan, what is going on?" Miss Bustier questioned. "It's Kim! I'm so gonna get..." Ivan was ready to punch Kim, but was stopped by his teacher. "Ivan, go to the principal's office." Miss Bustier ordered. Ivan walks away angrily.

After all the nonsense, (Y/n) made her way towards Marinette and the other new girl.

"Hey, (Y/n). This Alya and she's new here too." Marinette introduced them. "Nice to meet you, (Y/n). Alya smiled. "Same here." (Y/n) replies.

The three girls checked which class they have next and lucky for them they're going to the library next. As the girls were studying and getting to know each other, a sudden quake causes them to fall from their seats. They ran to the securities camera and saw Stoneheart.

"KIMMM!!!" Stoneheart yells.

"What's going on? He had Ivan's voice?" Marionette asked. "It's as if he's been transformed into a real-life supervillain! GPS, check. Battery, check. I am so outta here!" Alya runs towards the door. "Wait, Alya! Where are you going?!" (Y/n) asked worriedly. "Where there's a supervillain, there's always a superhero close behind! No way I'm missing this!" Alya runs off.

Marinette and (Y/n) looked back the the security camera and saw Stoneheart pick up a car and throw it at the security camera causing it to break.

"I think we should be heading home." (Y/n) suggested. "You're right, (Y/n)." Mariette said as they both ran towards their own destination.

(Y/n) was in her dorm sitting on her bed as she was watching the news about the new supervillain on her laptop.

"So much for my first day of school." (Y/n) mutters. As she continued to watch the news, she noticed a small box on her dresser. "What's this doing here?" She opens the box and a sudden how appears. (Y/n) gasped in fear as the glow moves around her. She glow fades away to reveal a tiny, light purple bat creature.

"Woah!" (Y/n) moves away from the creature. "A bat! But, tiny!"

"Relax, (Y/n). I mean no harm, I'm a friend." The bat smiles.

"What are you exactly....hey, how do you know my name?" (Y/n) asked suspiciously.

"My name is Bitz and I'm a kwami. I give you the power of echolocation." Bitz explained.

"This has got to be a joke, right?" (Y/n) face palmed. "I bet the other students are just doing to this show their fun side."

"Nope! I'm real! More importantly, you can't tell anyone about me." Bitz warns.

"But, why me? I'm just an exchange student. I don't know my way around Paris well." She argues.

"Because you are chosen for this role as a superhero." He explains. "All you have to do is fight Stoneheart with the partners you will meet.

As (Y/n) listens carefully, she puts on the choker with a bat charm dangling.

"All you have to say is 'Bitz, fly in the night'" Bitz instructed as (Y/n) nods.

"Bitz, fly in the night!"

(Y/n) begins to transform as Bitz enters her choker. It reveals a glowing bat with five pieces on it. (Y/n) crosses her hands over her face as she claps her hands together as her light purple suit morphs around her. She places her hands on her head as bat ears appear and putting her (h/c) hair in a high bun with two strip of hair in the front. A light purple, tessen fan that is similar to a bats wing appears in her hand as she slashes the air and poses with the tessen in front with her as her other hand was crossed over her stomach.

(Y/n) looks at herself in a mirror. "Woah...I look awesome!" She opens the window from her dorm room. "I should find those partners Bitz told me about." (Y/n) leaps off of the window, but she makes a clumsy landing on the roof of a building. "I really got to work on my landing skills." (Y/n) rubs her head.

As (Y/n) continues to leap over the building, she heard a scream coming from the other side of her. She ran over and saw that two new heroes are tangled up by a yo-yo.

"Well, hey there. Nice of you to drop in." The cat hero jokes. "Oh, I'm sorry, I didn't do it on purpose." The ladybug hero apologized.
"I bet you're one of my partners my kwami told me about." The cat hero said.

"Hey! Are you guys okay?" (Y/n) leaps over to them.

"Yeah, we're fine." The ladybug hero said. "I'm guessing you're our other partner."

"I guess so. I'm....Chiroptera! Yeah, I'm Chiroptera!" (Y/n) announced her hero name as Chiroptera.

"I'm... Cat Noir. Yeah, Cat Noir. And you?" Cat Noir points time the ladybug hero. "I'm Ma... err... Mar... uhh..." She pulls the yo-yo and it hits Cat Noir. "Madly Clumsy. I'm so clumsy."

"No sweat, clumsy girl. I'm learning the ropes too." Cat Noir said. "Yeah, we're all new to this." Chiroptera adds.

Suddenly, the floor trembles. Cat Noir and Chiroptera saw a building falling and they ran towards it.

"Hey! Where are you guys going?" The ladybug hero asked. "To save Paris, right?" Cat Noir said as he fans off. "We should probably be following him." Chiroptera jumps up a tree as she leaps into a building, following Cat Noir. "Trust yourself, trust yourself... " The ladybug hero uses the yo-yo to swing around and follow Cat Noir and Chiroptera.

In the Parc des Princes,  students are done with P.E, but then Stoneheart appears. "KIMMM!! So, who's wuss now?"

Kim tries to run away from the monster, but he trips and falls. Before Stoneheart could grab him, Cat Noir stops him with his staff.

"Hey, it's not very nice to pick on people who are smaller than you." Cat Noir taunts.

"I guess you're talking about yourself." Stoneheart remark

Cat Noir attacks Stoneheart with his staff, but he suddenly gets bigger. "Where are you, partners?" Cat Noir calls out.

"Up here, Cat Noir!" Chiroptera exclaims. She leaps over to them as she strikes Stoneheart with her tessen fan. Unfortunately for her, it makes him bigger. "Maybe I shouldn't have done that." Chiroptera mumbles.

Cat Noir and Chiroptera are dodging Stoneheart's attack as their partner was still viewing them. "Oh, I can't. I'm not gonna be able to do it... " She doubts herself.

Stoneheart throws a net away at Cat Noir and Chiroptera, but misses. The net was about to hit Alya, but Cat Noir saves her with his staff.

Once they calmed down, Stoneheart was close to grab Cat Noir.

"Watch out." Chiroptera pushes Cat Noir away as Stoneheart grabs her."

"Chiroptera!" Cat Noir exclaims.

"What are you waiting for, super red bug? The world is watching you!" Alya yells out. The ladybug hero finally found the courage as she fights Stoneheart. "Animal cruelty? How shameful!" She jested as she trips Stoneheart causing him to release Chiroptera. "Sorry it took so long, Cat Noir and Chiroptera." She apologized.

"It's cool, Wonderbug. Now, let's kick his rocky behind!" Cat Noir was about to attack, but Chiroptera grabs his tail. "Wait a minute! Haven't you noticed? He gets bigger and stronger with every attack. We have to find another solution." Chiroptera explains.

"Different how?"

"That...I have no idea..."

"Okay then. Let's use our powers. Cataclysm!" Cat Noir summons his power. "Apparently I destroy whatever I touch."

"I don't need a superpower to destroy everything." The ladybug hero argues. Cat Noir uses his Cataclysm to break the net. "No, don't do that!" She warns him.

"Cool. It's just you and me now! Time to rumble, soon-to-be rubble!" Cat Noir runs. "Cat Noir! Wait!" The two heroines called to him.

Cat Noir leaps towards Stoneheart to try and defeat him, but nothing happened. "Uh-oh. I guess I only get one shot to use my power." Stoneheart throws him away.

"And you only have five minutes before you transform back. Didn't your kwami explain anything to you?" The ladybug lectured him. "I guess I was a little excited about my new life." He puts his hands behind his head. Chiroptera bonks his head. "You dummy. We're suppose to restore him not destroy him."

"Well, up to me. Lucky Charm!" The ladybug hero summons her power. as a suit appears.

"Is that how your power works?" Chiroptera raised her brow.

"My kwami told me I have to break the object where the whatchama-call-it... er, the akuma is hiding." She explains.

"Well, he's made entirely out of stone." Cat Noir stated. 'His right hand, it's still closed. He never opens it. It's like the Russian dolls. The object isn't on him, it's hidden in his fist!" The ladybug hero realized.

"So what's your plan?" Chiroptera asked.

The ladybug hero absorbs her surroundings when her eyes lands on a hose, Alya and the wetsuit. "This!" She grabs the hose and ties it to the suit. Then ties Cat Noir's feet with her yo-yo. "Don't resist. Trust me. Chiroptera use your powers."

Chiroptera nods as she summons her power. "Echo!" She closes her tessen fan as she twirls around when a ball of glowing light appears on the tip of her lessen fan. She throws the glowing light at Stoneheart as wave signals only she could see come back to her. She saw how Stoneheart will try to attack them. "Time to let the bat and cat fly." Chiroptera runs towards Stoneheart as the ladybug hero gives her the suit tied to a hose. The ladybug hero throws Cat Noir.

"This girl's crazy!" He gets thrown and Stoneheart caught him. "Catch me if you can, rock head!" Chiroptera taunts. Stoneheart drop the akumatized object and grabs her. "Was your plan to get captured too?" Cat Noir asked. Chiroptera nods. "Just watch."

"And now... Alya, the tap!" The ladybug hero ordered. Alya runs over to the water tap and opens it. The water sprouts and inflates the suit. Stoneheart lets go of Chiroptera as she distracts him while the ladybug hero breaks the akumatized object. The  Akuma flies away as Stoneheart turns back into Ivan and Cat Noir was released from his grip.

"This girl is awesome. She's crazy awesome." Cat Noir commented. Chiroptera walks over to him and helps him up. "You said it. I think I found a new friend, well two new friends." They walked over to the ladybug hero.

"What's going on? What am I doing here?" Ivan was confused.

"You were incredible, miss... uh... Bug lady. You did it!" Cat Noir exclaims. "More like you two were amazing!" Chiroptera smiles. "We all did it, partners." The ladybug hero stated.

"Pound it!" The three heroes fist pumped.

Suddenly, Cat Noir's Miraculous beeps. "You should get going. Our identities must remain secret." The ladybug hero explains. "Farewell, m'lady and batty. Let's do this again soon, okay?" Cat Noir leaves. "See ya, kitty!" Chiroptera waves. "Not too soon, I hope." The ladybug hero said which causes Chiroptera to laugh. They both walked over to Ivan as they read the paper he had. "You haven't even got the guts to tell Mylène you love her, wuss."

"Well, that's just rude." Chiroptera crosses her arms in disgust.

"Kim wrote it. He's always making fun of me." Ivan explains.

"You know, you shouldn't get so bent out of shape about that. There's no shame in telling someone you love them, Ivan." The ladybug hero told him.

"Hey, how did you know my name, miss?"

"Uncanny, amazing, spectacular!" Alya held her camera in front of them. "Are you guys gonna be protecting Paris from now on? How did you get your powers? Did you get stung by a radioactive Ladybug and bat? Oh, I've got a ton of questions to ask you, Chiroptera and uh, miss... uhh..."

"Uhh... Ladybug! Call me Ladybug." Ladybug announced her name as she and Chiroptera left.

Back in (Y/n)'s room, she was setting on her bed as she watched the news of her and her new hero friends.

"So thanks to this amateur footage, the Parisians now know the identities of their heroes!" Nadja said to the camera.

"That was us, Bitz! I can't believe it!" (Y/n) squealed in excitement. "I'm proud of you, (Y/n)." Bitz said as he munched on some blueberries. "Hey, don't all of them!" (Y/n) laughed as she ate one.

As they continued to laugh, as they continued to watch the news on the laptop. (Y/n) lays on her stomach as Bitz lays on her head.

"Just as Paris is about to celebrate the appearance of our three new superheroes, Ladybug, Cat Noir, and Chiroptera, a new wave of panic is sweeping across the capital as dozens of people are mysteriously transformed into stone monsters. It's simply unbelievable." Nadja announced.

"What the..." (Y/n) stood up as she grabs her laptop closer to her.

"These victims transformed into stone beings are still like statues. The police are perplexed to what will happen to them. Will they come back to life or be frozen in time forever?" Nadja explains.

"Bitz, what happened? I thought we've defeated Stoneheart." (Y/n) questioned. "Did you capture the akuma?" Bitz flies off her head and flies in front of her.

"No, but what does that akuma have to do with those Stoneheart copies?" (Y/n) replies.

"An akuma will multiply if you don't capture it. If Ivan's emotions become negative again, then he'll become Stoneheart again and this time he'll have an army." Bitz explains.

"Okay, then let's go find the akuma."

"You can't, only Ladybug has the power to capture akumas and repair damages cause by the supervillain."

"So, there's nothing I can do?"

"Sorry, (Y/n), but you can help if things go crazy again."

(Y/n) sighs as she falls back on her bed. "Great. My first day in Paris and everything is going down hill."

Bitz could see the sadness in his owner's eyes, so he decides to comfort her. "Everything's going to be okay, (Y/n). It was your first day of being a superhero and I know you'll do great in the future."

(Y/n) smiles at her bat kwami. "Thanks, Bitz." She sits up as she allows Bits to hug her cheek.

"I just hope everything's going to be okay in the end." She said as looks over the window.