(Y/n) was walking towards Nino and Adrien. Since today is Adrien's birthday she wanted to give him her gift. "Hey, guys!" She waved. "Hey, (Y/n)!" They waved back.

(Y/n) opened her backpack and pulled out a envelope with Adrien's name on it. "Happy Birthday, Adrien." She handed him the envelope. "Thanks, (Y/n)." He opens his gift. It was birthday card and inside was a small birthday song (Y/N) wrote for him. "Aww, (Y/n). That's so sweet of you. Thank you again."

"What are friends for." She smiles at him.

(Y/n) turned her head slightly as she saw Marinette and Alya hiding nearby. She giggles as she excused herself from the boys.

"Might I ask why are you guys hiding?" (Y/n) asked as she crouched down with them. "I'm encouraging Marinette to go give her present to Adrien." Alya explains. (Y/n) smiles at her friends and decides to join in. "You got this, Marinette."

"You can do it, you can do it!" Alya encouraged. "I can do it, I can do it!" Marinette said to herself. She pops up to look at Adrien. "I can't do it, I can't do it!"

Alya facepalms. "Uh, no you don't, girl. You've been stalling all morning. Now's the time." She pushes Marinette over to Adrien. "Go for it, Marinette." (Y/n) quietly cheers.

Marinette stops right in front of Adrien. "Um, he-- Hey!" She is nervous as she holds her gift behind her back. "Hey." Adrien greeted back. "I, uh, I wanted to, umm, gift you a make-– I mean, gift you a give I made-- I mean..." Marinette spoke nervously.

Chloé suddenly appears and shoves Marinette out of the way. "Out of the way." She then acts sweet. "Happy birthday, Adrien!" She throws herself onto him and gives him a kiss on the cheek. "Yeah, thanks Chlo." Adrien gently pushed her off.

"Dummy." Marinette muttered to herself as Alya facepalms again. "Well, that was embarrassing." (Y/n) said.

"Did you get the gift I sent you?" Chloé asked. "Uh, no." Adrien replied. Then she pretends to be annoyed. "What? Oh, those delivery guys. I bet it was too heavy so they had to go back and get another guy to help. Those slackers. I'll make sure they get it to you by tonight." She gives him another kiss on the cheek and leaves. Nino chuckles and playfully punches Adrien's arm.

"Get back there! Don't be a pushover." Alya encouraged. "Literally!" (Y/n) adds. Marinette wasn't so sure anymore, which caused her two best friends to be frustrated.

"C'mon, Marinette, you can do it." (Y/n) smiles at her friend. Marinette was finally determined, but stopped when a limousine arrives.

"Gotta go. Photoshoot." Adrien said to Nino. He gets into the limo and leaves.

"Why can't I just mean what I say?" Marinette spoke. "Uh, say what you mean?" Alya and (Y/n) asked in union. "Exactly." Marinette replies. (Y/n) wraps her arm Marinette's shoulder. "I think there's still a way to give Adrien his present."

All three girls were standing outside the Agreste Mansion.

"This is his house? It's huge!" (Y/n) exclaims. "I guess that's the perk of being a famous model."

Marinette tries to open the mailbox. "This mailbox won't budge!" Alya points at the doorbell. "Ring the doorbell."

"Are you kidding? What if Adrien answers the--" Marinette begins to ramble, but stops when (Y/n) presses the doorbell. Marinette panics and screams. A hidden compartment on the wall opens and a camera appears.

"Yes?" A voiced said. "Um, hi. I'm in Adrien's class and I, uh--" Marinette shows her present to the camera. "Heh, did I already say that? Umm...Heh..." She smiles awkwardly. "Put it in the box." The woman instructed as the mailbox opens. Marinette puts the gift in the mailbox. "Thank you." The camera retreats and wall compartment closes. Marinette get excited. "Oh! I hope he likes it!"

"You signed the note, right?" Alya asked, but she saw Marinette making a surprised face. "Ah, girl, girl, girl."

Marinette groans as (Y/n) pats her back.

(Y/n) left her friends as she walking towards the park. She found a quiet spot under a tree opens her backpack. Bitz fly out as he was munching on some fruit. "You better be saving me some fruit, Bitz." (Y/n) joked. Bitz gave her a face of mischief. "I don't know, (Y/n). I might have eaten them all." They broke into a laugh as (Y/n) took some fruit out of the container and digs in. As she was eating her snack and Bitz resting on her head, she pulled out her notebook as she was writing more songs. Her writing was interrupted as she heard screams. She looks up and saw that all of the adults were being captured by bubbles and fly away into the air.

The bubbles showed the face of the new villain Hawk Moth akumatized. "Today is your lucky day, little dudes. The adults have taken the day off, so make the most of it. No chores, no homework, no more nagging, just fun, fun, fun, fun. This is the Bubbler's gift to you."

"Nino?!" (Y/n) gasped. "This is bad. You have to save him, (Y/n)." (Y/n) nods. "Yeah. Ladybug, Cat Noir and Chiroptera will save him."

Just before (Y/n) could run off to transform, the Bubbler appears in front of her. "(Y/n)! Just the girl I was looking for!"

"Nino?! What happened to you?" (Y/n) pretends to be shocked. Bitz quickly hit behind her (h/l), (h/c) hair.

"It's the Bubbler now. I'm here to take you and the others to Adrien's sweet B-Day Party! And I want you to sing that special b-day song you wrote for him!"

(Y/n) started to sweat nervously. "H-Hold on a minute! Ni-I mean Bubbler, you know I get nervous when singing in front of people."

Bubbler grins. "That's why it's the perfect day to over come that stage fright of yours."

Before (Y/n) could protest more, Bubbler used his bubbles to transport (Y/n) at Adrien's mansion. Not long, (Y/n) lands with her other classmates. The Bubbler orders them to take their places and wait for Adrien to come out.

Within a few minutes, Adrien came out. "Happy birthday!" Everyone cheered.

Bubbler stands on top of a bubble. "Hey, hey, hey, birthday boy. Guess what? Daddy's gone. While the cat's away, the mice will play. Adrien looks shocked at his best friend. "Nino?!"

"The Bubbler's brought all yo homies together for one single-sole purpose, to ce-le-brate!" The Bubbler announces as everyone cheers. He jumps down from the bubble into a DJ booth. "Let's get this party started!" He begins to play music as everyone was forced to dance. Adrien looks surprised and runs back into his house. "Come on, everybody, I brought you here to party! So dance or you'll join the adults up in the sky!" The Bubbler laughs evilly as he shoots fireworks.

Later, Adrien comes out to the party as he tries to have a good time, but not everyone is. He saw (Y/n) and decided to talk to her. "Hey, nice party, I guess, since it's my first one."

"This party is great, but you could see that everyone isn't enjoying it." (Y/n) tilts her head to signal Adrien to look over. She was right, he could see that everyone had a grim expression of their faces as they dance. Suddenly a slow dance song started.

'Okay, a slow dance is early.'(Y/n) thought.

"Is it me, or does everyone seem a bit weird?" Adrien asked. Before (Y/n) could answer, Chloé pushed her out of the way. "Forget about them, let's go dance! C'mon!" Chloé pulls Adrien for a dance. (Y/n) sighs in irritation as one of her male classmates danced with her.

'I have to get out of her so I could call Ladybug and Cat Noir, but how?' (Y/n) begins to think of a plan. Her thoughts were interrupted when the music was changed. Everyone breaks away from their pairs and danced. That's when the Bubbler realizes that the music changed. "Dude! Who just hijacked my mix?"

"Yours truly." (Y/n) saw that Ladybug was here. "LB!" (Y/n) whispered. She saw that her hero friend quickly left before she could transform back. "Let's hope she comes back soon."

Marinette enters the party and starts looking around. She heads to the food table, grabs some cookies. (Y/n) saw her and gets Alya.

"Alya. Marinette here." (Y/n) points at the snack table. "Where have you been, girl? We were so scared something had happened to you." Alya pulled Marinette into a hug. "Me too!" She hugged back. "Don't ever scare me like that again." (Y/n) pull her into a hug. "Sorry." Marinette apologized.

"I'm sure Ladybug, Cat Noir and Chiroptera, will show up in a minute to save us all." Alya reinsured. "They never failed us. Meanwhile, come with me, I've got something for you."

"Uh, there's something I've got to do first." Marinette said.

" It's about Adrien."

Marinette paused. "Okay."

As the three of them were walking inside, Bubbler stopped. "Yo, (Y/n)! You're about to sing Adrien's birthday song!"

"Y-Yeah! I will it's just...I have to go to the bathroom! Yeah! I drank too much punch." (Y/n) lied.

"Oh. Okay. Hurry back." Bubbler was fooled.

Alya and (Y/n) took Marinette to sign her name on Adrien's gift. They wanted outside for her, but they entered when they heard their names. "What'd you say?" Alya asked. "Go ahead! I'll meet you in the yard." Marinette said. They closed the door and left.

"Alya, why don't you go ahead. I'm going to the bathroom." (Y/n) smiles. Alya smiles back. "Sure thing."

Once as Alya was out of her sight, (Y/n) quickly ran to the nearest bathroom. She locked the door and she leans against the it and lets out a dramatic sigh. Bitz flew out of her hair.

"Time to transform?" Bitz asked.

(Y/n) smirks. "You know it! 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.

Chiroptera leaps out of the window. She heads towards the party and saw Ladybug was there. "Hey, LB! You're just in time for the party." Chiroptera stands next to her. "Glad you could make it, Chiroptera." Ladybug smiles.

Adrien was on top of the DJ booth with a microphone. "Hey, Paris, how you doing?" He raises the mike in excitement, but the people don't respond. The Bubbler, behind Adrien, threatens everyone with his bubble sword, and they cheer. Adrien jumps out and saw Ladybug and Chiroptera on the roof. "Ladybug? Chiroptera?"

Chiroptera throws her tessen fan and slashes the plugs. Her tessen fan flew back to her as she caught it. "Sorry, Bubbler, but the party is over."

"Why you gotta be like that?" Bubbles questioned. "You made all the adults disappear, that's why! And now you're imprisoning anyone who isn't having fun." Ladybug answered. "You will not bust up my party!" Bubbler takes out his bubble sword and casts two bubbles at the heroines. They were able to deflect it and the crowd scatters away.

Ladybug and Chiroptera continue their battle with the Bubbler. Chiroptera throws her lessen fan at the bubbles coming towards them, but it bounces off. She was able to catch it in time before it hits her. Ladybug tries to throw her yo-yo, but it bounces off too and it bounces towards her. Cat Noir enters and hits the yo-yo with his staff, saving Ladybug.

"Looks like I made it just in time." Cat Noir took a battle stance. "Took you long enough, CN." Chiroptera smirks. "We had it under control," Ladybug's yo-yo falls on Cat Noir's head, "but thanks." Chiroptera snickers as the yo-yo hits the cat's head.

The three heroes could see that Hawk Moth's mask appears on Bubbler's face, meaning he was talking to him. Suddenly the Bubbler snaps his fingers, and the bubbles turn green and start circling around the heroes. Suddenly the heroes were trapped in one big bubble. They struggle to break free.

The Bubbler laughs. "Give me your Miraculouses before you run out of air."

"Like that's ever going to happen, Bubbler." Chiroptera replied sarcastically. "Total party poopers, just like adults." Bubbler remarked. "Kids need adults." Ladybug said. "False! Kids need freedom, fun, let loose and live it up. Adults are controlling and bossy." Bubbler makes his statement. " But adults keep children safe and protected." Ladybug argues. "They care for their kids, they love them!" Chiroptera adds.

"Most adults do anyhow." Chiroptera heard Cat Noir talking to himself. "You must bring the adults back!" He exclaims. "Nope, never. Know what, since you care so much about these adults, why don't you go float with them for a while?" Bubbler runs at them and kicks the bubble high up into the sky, causing the heroes to scream.

High in the sky, Ladybug, Cat Noir, and Chiroptera try to burst the bubble they were in.

"Use your Cataclysm!" Ladybug instructed.

"Couldn't you have said that five hundred feet ago?" Cat Noir remarks.

"We can't stay stuck in this bubble together forever."

Cat Noir smirks at Ladybug while she facepalms. Chiroptera groans in annoyance as she smacks Cat Noir's head. "Did you forget I'm here too?"

Cat Noir rubs his head from the pain Chiroptera gave him. "Cataclysm!" He summons his power. He touches the bubble and it bursts, causing them to fall. "Should we see if you land on your feet this time?" Chiroptera joked. "No, thanks! Shouldn't you be flying?" Cat Noir replies. "We bats fly at night!" Chiroptera shouts.

"Cat Noir! Your stick, there!" Ladybug points to the Eiffel Tower. "Got it!" Cat Noir throws his staff so hard it gets stuck in the Eiffel Tower. Ladybug takes his hand as Chiroptera took his other hand.

"Hang on!" Ladybug throws her yo-yo as it t catches around the Cat Noir's staff. The three of them swing and land safely. "Good thing cats aren't afraid of heights." Cat Noir jested. "We've got to get to his bubble sword, that's got to be where the akuma is." Ladybug stated. They heard Cat Noir's ring beeping. "We better hurry before you transform back, Cat Noir." Chiroptera said. "Right!" Cat Noir agrees.

The three heroes ran back to the Agreste Mansion.

"Where is everybody? Get out here and party!" Bubbler demands.

"Sorry to burst your bubble." Ladybug spoke.

"Ladybug!" Alya yells as the crowd cheers.

"The party is over for you, Bubbler." Chiroptera points her closed lessen fan at him.

"What's wrong with all you guys!? Why you gotta be such haters!?" With anger, Bubbler takes out his bubble sword and captures all the teens in bubbles, sending them into the air.

"NOOO!" Ladybug, Cat Noir and Chiroptera screamed.

"Outer space is the next stop for your precious peeps, and they're never coming back!" Bubbler leaps away as the heroes chase after him.

Bubbler flies towards the Eiffel Tower. Ladybug, Cat Noir, and Chiroptera start climbing it while Bubbler throws explosive bubbles at them. As soon as they land, Cat Noir's ring beeps again. "I'm gonna switch back soon, hurry."

"Lucky Charm!" Ladybug summons her power and it gives her a big wrench. "Your... plumbing skill is gonna help us out?" Cat Noir said questionably. "I got this. Echo!" Chiroptera summons her power. She throws the glowing orb at Bubbler and saw the wave signals only she could see. She saw that Bubbler will be throwing more of his explosive bubbles. "Dodge, guys!" Chiroptera orders as they follow. Just as Chiroptera predicted, Bubbler throws more explosive bubbles at them as they continue to dodge.

As Chiroptera and Cat Noir continue to fight Bubbler, Ladybug begins to think of her plan. She saw a vent, a vent pipe, the screw connecting them, and the wrench. She finally connect the thoughts. "Got it!" She runs towards the pipe while Cat Noir and Chiroptera are still dodging bubbles. She loosens the screw and the pipe comes off. It goes up to where Cat Noir and Chiroptera were standing. Cat Noir, cover me!" Ladybug orders. Cat Noir takes the pipe. "Go on!" Cat Noir yells.

"Yo! Bubbler! Can't catch me!" Chiroptera taunts. Before he could throw more bubbles at Cat Noir and Chiroptera, Ladybug throws her yo-yo and snatches his bubble sword. She breaks the sword in half with her knees." Get out of there, you nasty bug." The akuma flies out of the sword.

"No more evil-doing for you, little akuma." Ladybug opens her yo-yo. "Time to de-evilize! (She swings it around, captures the akuma and closes it." Gotcha!" She releases the butterfly. "Bye-bye, little butterfly. Miraculous Ladybug!" Ladybug throws the wrench up in the sky, and the Miraculous cleansing light returns every adult to safety.

The Bubbler falls on his knees as the black smoke covers him and he turns back to Nino. "Who? Dude."

Ladybug, Cat Noir, and Chiroptera bumped their fists. "Pound it!"

(Y/n) was outside of the school with her friends as they could hear Chloé complaining to Sabrina. "What do you mean not for a week?!"

"There were no adults yesterday to deliver it." Sabrina replied with a scare tone.

"So what? Ridiculous, utterly ridiculous!" Chloé storms inside as Sabrina follows her.

"Ha ha! Serves Chloé right." Alya laughed. "She got what she deserve." (Y/n) agrees.

"Hey girls!" Adrien greets as he gets out of the limousine, wearing a scarf.

"Hey, that's my scarf! He's wearing my scarf." Marinette told Alya and (Y/n)

"Hey, dude." Adrien greets Nino.

"Yo, nice scarf, Adrien. Off the chain." Alya said. "It's a good look for you, bud." (Y/n) comments.

" Yeah, can you believe my dad got this for me? He's so awesome. He's been giving me the same lame pen for three years in a row." Adrien told them.

"Wow, I guess anyone can change. Adults can be cool when you least expect it." Nino spoke.

"Speaking of adults, I know my father said you were a bad influence, but--"

"We're good, Adrien, don't sweat it. We're buds. Always and forever."

Alya turns to Marinette. "You gotta tell him you were the one who knitted the scarf." (Y/n) joins. "She's right. How else will he know that you made it for him."

"But he seems so happy about his dad. I don't want to spoil it for him." Marinette explains. "Aw, Marinette." Alya and (Y/n) pulled her into a hug. "You're amazing, girl. You know that, right?" Alya complemented. "And someday Adrien will figure it out too. Promise." (Y/n) adds.

They heard the bell ringing. The three best friends walked in as they continued with the rest of their day.