Roslie's POV

I wake up and remember it's mine and Adrien's birthday. Allow me to introduce myself. I'm Roslie Agreste, the younger twin sister of Adrien Agreste. The only daughter of Gabriel Agreste. Anyway I got dressed for school and go to Adrien's room to hear him talking to himself again. "Adrien" I say as I enter the room after knocking.

"Morning Roslie, happy birthday" he says with a smile and I smile back.

"Happy birthday brother" I say and give him a hug. "Do you think father will allow us to have a party?" I ask him hopeful. We haven't had a party since our mum died, years ago.

"I don't know, I hope so" he tells me. "Lets go ask Natalie" he suggests. I agree and we go to the dining room. We sit down and start to enjoy our breakfast when Natalie appears with two tablets.

"Your schedules" she says handing us each a tablet.

"Thank you Natalie" I say politely and start to go through my schedule.

"Hey, um, did our father get back to you about our birthday party?" Adrien asks her hopeful.

"Well, um-- He... doesn't think would be a good idea" Natalie tells us. We sigh sadly. I no longer feel hungry and put the tablet down.

"Course not" we grumble.

"Happy birthday, Adrien Roslie" she says and leaves us. We head to school. At least I'll be able to see my friend Leo Dupain-Cheng. He always cheers me up.

Leo's POV

I'm in the kitchen with mum. Waiting for my twin sister Marinette to come downstairs, so that we can get to school. My name is Leo Dupain-Cheng. "Marinette, don't forget to clean your room after school today" mum tells my sister as she appears.

"Mom! It's Friday, and I'm already doing something with Alya" Marinette whines.

"I can clean it along with my own room" I offer.

"Really?" Marinette asks me hopeful.

"Just don't blame me if I come across any of your private stuff, like your e-mails, your diary or collection or Adrien photos" I tell her with a teasing smirk.

"Okay! I'll do it, I'll do it" she states and I kiss our mum on the cheek. Before grabbing mine and Marinette's school bags.

"Have a nice day, sweeties" mum tells us as we head for the door.

"Happy birthday" Marinette says and I chuckle.

"She meant, have a nice day" I tell mum and we left. "Day dreaming about a certain boy called Adrien?" I ask Marinette in a teasing tone. As I handed her, her school bag.

"No, of course not" she says blushing.

"Really? Then who is the present for?" I ask her.

"Adrien, I mean Roslie" she states.

"Your secret is safe with me" I assure her. "Besides I have a gift for Roslie" I state. "Race you to school" I add and take off running.

"No fair, you have longer legs!" she whines as she races after me. I just laugh. I arrive and go to class. After morning lessons I go out the front to see Roslie with her brother Adrien & Nino. Adrien's best friend.

"Happy birthday guys, so when's the party?" I ask them curious.

"No party, dad said no" Roslie tells me sadly.

"That sucks" I state.

"I know right" Nino agrees with me. " Dude, seriously? Has your dad always been such a downer?" he asks Adrien.

"You'd think he'd remember what it was like to be young and wanna party a little" I add.

"No, I'm pretty sure he was a downer back then too" Adrien tells us.

"At least we tried" Roslie adds.

"It's your and Roslie's b-day, dude! Insist!" Nino tells Adrien.

"I agree with Nino, tell you what I'll talk to your father after school" I state.

"I'll go with him" Nino adds.

"Don't waste your times. He's not gonna change his mind" they tells us. Before we could argue Marinette appears looking flustered as usual.

"Um, he-- Hey!" she stutters.

"Hey" Adrien and Roslie say.

"I, uh, I wanted to, umm, gift you a make-– I mean, gift you a give I made" Marinette stutters. Chloe appears at her side. "-- I mean..." she tries to correct herself.

"Out of the way" Chloe says pushing her to the ground. I glare at her, Chloe is such a bitch. I help my sister to her feet. "Happy birthday, Adrien and Roslie" she says sweetly hugging Roslie and kisses Adrien on the cheek.

"Thanks Chloe" Adrien says.

"Yeah, thanks" Roslie adds.

"Did you both get the gift I sent you both?" she asks them.

"Uh no" Adrien says and Roslie shakes her head.

"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" Chloe says looking annoyed. She hugs Adrien. "I'll make sure they get the gifts to you both by tonight" she states and kisses his cheek. Before leaving and Nino punches Adrien's arm playfully.

"Are you ok Marinette?" Roslie asks her concerned.

"Oh I'm fine, happy birthday" Marinette tells her. Just then a limo pulls up.

"I gotta go, photoshot. You coming Leo?" Roslie asks me. I'm studying photgraphy.

"Of course, I hope I get a chance to take photos today" I tell her. I say good bye to my sister. Then get into the limo with Adrien and Roslie. "By the way, here" I tell them handing them each a wrapped gift from me. "It's not much, but I hope you both like them" I state. They open them to see a framed photo of them both together.

"Wow, great shoot Leo. You'll be a fine photographer yet" Adrien tells me. Roslie nods her head in agreement.

"I hope so" I tell them. It's while I tag along to their photo shots. Hoping to impress their photographer and that he'd take me as an apprentice.

(Time skip)

"Not bad, but I must say you would make a great model" the photographer tells me. "Give me a call whenever you want to talk more about your future career" he states handing me a card. I thank him and say goodbye to the other two. They go home as I decide to hang around the park.

I look at my phone and see it's nearly time to go back to school. When I hear screaming. I look up to see adults trapped in green bubbles. There must be another akumatised person. But who? I have to find Marinette and Roslie. I race to Roslie's house first as it is closer, then Ayla's house.

I arrive to see the new villain there along with all my class mates. "You're just in time Leo, for the party" the villain tells me.

"Nino?" I say surprised.

"It's Bubbler now" he states as Roslie appears with Adrien.

Roslie's POV

"Yay! Woo! Happy birthday!" our friends cheer once we exit the house. I look around and smile. Dad has allowed us to have a party after all. I run over and hug my friends.

"While the cat's away, the mice will play" the new villain says. Wait, father is gone? "The Bubbler's brought all yo homies together for one single-sole purpose, to ce-le-brate!" he announces. The music begins.

"Roslie, we have to go" Leo says as he appears at my side.

"But it's mine and Adrien's party. You said yourself we deserved to have one" I remind him.

"I know, but Nino has been akumatised. You know that never ends well for anyone" he tells me.

"Come on, everybody, I brought you here to party!" Bubbler shouts. Everyone dances around us looking sad. "So dance or you'll join the adults up in the sky" he says.

"Is this what you want Roslie? Does anyone look happy?" Leo asks me.

"No, I want everyone to be happy" I tell him. "But what do we do?" I ask him.

"Keep a low profile until Ladybug appears" he tells me as Adrien joins the party. "Just copy everyone else and you'll be fine. I won't let anything happen to you" he assures me. I smile and we start to slow dance. I notice Adrien dancing with Chloe.

Soon a more upbeat song starts up and I notice Marinette. "Your sister's here" I tell Leo.

"I'm gonna go make sure she's ok, you go see your brother" he tells me. I nod my head and he goes over to the buffet table. I go over to Adrien. Who is on stage.

"Hey, Paris, how you doing?" Adrien asks excited. He raises the mike in excitement, but the people don't respond. The Bubbler, threatens everyone with his bubble sword, and they cheer. But Adrien does not notice and jumps down giving me a hug. "Isn't this great?" he asks me.

Before I can respond Ladybug appears and I sigh in relief. Ladybug throws her yo-yo. It hits the power strip and unplugs everything. Ladybug retracts her yo-yo. "Sorry, Bubbler, but the party is over" she tells him.

"Why you gotta be like that?" Bubbler asks her annoyed.

"You made all the adults disappear, that's why! And now you're imprisoning anyone who isn't having fun" she states.

"You are not going to bust on my party!" Bubbler exclaims. He takes out his bubble sword and casts two bubbles at her, which she deflects. I'm grabbed and pulled behind a the buffet table.

"Where's Adrien?" Leo asks me.

"I don't know, he was next to me when Ladybug appeared" I tell him. "Where's Marinette?" I ask him.

"She disappeared with Ayla, before I could talk to her" he tells me. "We have too get you somewhere safe" he states.

"But our siblings?" I ask him concerned.

"Adrien can take care of himself and Marinette was with Ayla" he states. "My main concern right now is you" he tells me. We join the other kids as Catnoir appears. Soon he and Ladybug are trapped in a green bubble.

"Give me your Miraculouses before you run out of air" Bubbler tells them.

"Dream on, Bubbler" Ladybug tells him.

"Total party poopers, just like adults" Bubbler states.

"Kids need Adults" I state as I step forward.

"She's right" Leo says as he stands beside me holding my hand. We get the Bubbler's attention, giving Ladybug and Catnoir sometime.

"False! Kids need freedom, fun, let loose and live it up. Adults are controlling and bossy" Bubbler tells us.

"Some are, but not all of them" I tell him.

"She's right, adults keep children safe and protected. They care for their kids, they love them" Leo states.

"You have to bring them back Nino, this is not you. Don't you miss your parents?" I ask him.

"Nope, never. Know what, since you care so much about these adults, why don't you go float with them for a while?" he tells us. We become trapped in a bubble and he kicks us upwards. I cling to Leo as we shot into the sky.

"It'll be ok Roslie, Ladybug and Catnoir will find a way to stop Bubbler" Leo assures me. Soon our other friends appear in bubbles around us.

"Where's Ladybug and Catnoir?" I ask them.

"They're facing Bubbler now, I wish I was then to catch it all on camera" Ayla states.

"See, we'll be out of here soon" Leo assures me and he was right. Not long after we're back on the ground safely. I hug him tightly and kiss his cheek.

"Thanks for standing beside me when I challenged Bubbler" I tell him.

"I'll do anything for you Roslie" he tells me.

(Next day) Third Persons POV

Adrien and Roslie had both received a scarf each. Which they believe is from their father. When they are actually from Marinette. Who decides to keep is a secret as both twins seem thrilled by the gift. As the last three years they have only gotten the same lame pens from their father. Leo sat beside Roslie in class and complimented her new scarf. Before they focus on the teacher.

A/N

Picture above of Roslie and Leo. Video above of the opening theme song and picture on the external link of the Bubbler.