Note: Some of the pictures from the links are small, but they were the only good ones i could find.
We start the next day (in the evening), in the apartment. Marinette is sitting on the couch, watching TV while Tikki is sitting on the table, finishing a cookie.
Tikki: Marinette, shouldn't have headed out earlier? You need to find Chat Noir.
Marinette: I know Tikki, but i just wanted to relax a bit before going. Plus, my parents were worried about my yesterday. I don't want to upset them again, especially after i lied to them about the Louvre.
Tikki: But why did you lie to them?
Marinette: It was a white lie, Tikki. It's lie you tell people so that you don't hurt their feelings.
Tikki: I think i understand.
Suddenly, the TV is turned off, as the power goes out.
Marinette: What the....what's going on?
Tikki: Marinette, something doesn't feel right.
Marinette: Yeah, my parents did pay the electric bill.
She then picks up her phone, but she sees the screen distorted.
Marinette: Okay, you maybe onto something, Tikki.
Tikki: Marinette, i....fell strange.
Tikki tries to fly, but sways a little before falling.
Marinette: TIKKI!!!
Marinette catches Tikki in her hand.
Marinette: Tikki, are you alright? Are you sick again?
Tikki: I...i don't know. But i this feeling, it's the...the same as yesterday.
Marinette: What do you mean?
Tikki: Yesterday, during the incident, i had a strange feeling. I thought it was just because i was both surprised and shocked.
Marinette: C'mon, we gotta go see Master Fu!
Marientte grabs her purse and puts Tikki in it, she then puts on her shoes and leaves the apartment. She then walks down the stairs, heading to the door, but Sabine comes out of the kitchen.
Sabine: Marinette?
Marinette: (stops at the door) Yeah, mom?
Sabine: Are you heading out?
Marinette: Yeah, why?
Sabine: The power's out, so your father and i want you to go out for a while.
Marinette: Okay mom, i'll see you later.
Marinette opens the door and leaves. Tom then pops out of the kitchen.
Tom: I just called the electrian, but he's got other places to check first. Did Marinette just leave?
Sabine: Yes, she did. What should we do now?
Tom: Might as well finish everything while the powers out.
Tom and Sabine walk back into the kitchen.
Meanwhile, in the Agreste Mansion, in Adrien's room.
Adrien is on the computer, looking at the Ladyblog while Plagg is sleeping on the bed, next to a plate.
Adrien: I wonder if Alya find out anything on the "sword"...or if she has something new on Ladybug.
Plagg: (waking up, yawning)...Can you keep it down? I was having a good nap.
Adrien: That's not surprising. So...got any ideas what we should do?
Plagg: How about getting some camembert?
Adrien: For once, can you stop thinking about camembert?
Plagg: You know i can't help it, it's so gooood.
Suddenly, the power goes out.
Adrien: A power outage?!? What's going on?
Plagg: Ugh...i don't feel so good.
Adrien: Huh...I never thought you would get sick from eating camembert.
Plagg: It's not that...i....
Plagg tries to fly, but falls back on the bed.
Adrien: You okay, Plagg? I never seen you like this.
Plagg: I just...feel funny, but i'm not sick. I haven't felt like this since yesterday.
Adrien: Yesterday? As in what happened in the Louvre?
Plagg: Yeah, but i thought i was just hungry. I don't know what happened.
Adrien: C'mon, Plagg, maybe Ladybug knows what happened.
Then, the door opens, Adrien grabs Plagg and hides him behind as Nathalie walks in.
Adrien: What is it? Does my dad need me?
Nathalie: Your father asked to check on you. He also said for you to stay in your room till the power comes back on.
Adrien: Oh...okay.
Nathalie: Is there something wrong?
Adrien: Yeah, i was going to ask him something.
Nathalie: You can ask him later. He is busy, especially with the power outage costing him his time.
Nathalie then walks back to the door and leave. Adrien then puts his hands in front, seeing Plagg lyng down in his palms.
Adrien: Hear that Plagg? We got some time!
Plagg: Are you sure about this? You don't even know what would happened to you.
Adrien: It's a risk i'm willing to take for you, buddy. Plagg, Claws Out!
Adrien transforms into Chat Noir.
Chat Noir: NGGHHH!!
He kneels to the ground, clenching his teeth and chest in pain.
Chat Noir: Plagg wasn't kidding, this....Ngh...(stands back up)...I can't let this slow me down. I better find Ladybug, and fast.
Chat Noir walks over to the window, opens it, and jumps out.
Meanwhile, in the park....
Marinette is running through Champ de Mars, heading towards the Master Fu's shop.
Marinette: I can't believe the buses aren't working. Whatever's happeneing, it can't be good.
Suddenly, screams are heard as Marinette see's people, running away.
Marinette: What are they running from? Wait a minute...they running from the direction of the Trocadéro!
She looks around, then run behinds a bush. She then takes Tikki out of her purse.
Marinette: C'mon, Tikki, i need to transform.
Tikki: (weakly) Marinette, are sure you want to go through with this? You don't know what would happened.
Marinette: Tikki, people are in danger! Plus, i won't be able to take you to Master Fu in time, not at this rate. Just trust me...please.
Tikki:...Okay, Marinette, i trust you.
Marinette: Tikki, Spots On!
Marinette transforms into Ladybug.
Ladybug: GAHHH!!!
Ladybug falls to the ground, on her back, clenching her stomach.
Ladybug: I...i can do this...(gets up)...ngh. Tikki trusts me, so i have to do this.
Ladybug throws her Yo-Yo and swings towards the Trocadéro.
Meanwhile, at the Trocadéro...
Roger is standing on the steps of the Jardins du Trocadérox with megaphone in hand.
Roger: (with megaphone) Everyone, clear the area, get yourselfs to safety.
A crowd of people runs past him as strange "miner" creatures appear and attack, trying to destroy the park with pickaxes and crow-like creatures dive bombs on people.
vignette.wikia.nocookie.net/megaman/images/7/7b/SF_BC_034.png/revision/latest?cb=20120102064318
Roger then runs as dodges a "crow" swooping down on him. Meanwhile, Alya is hiding amongst the trees.
Alya: What are those things? (pulls out her phone) Dang it, i can't take a video.
Then Ladybug appears, landing on the ground, and looks at the creatures.
Ladybug: What are those things? Where they created by an Akuma?
The creatures then turn around, looking at her.
Marinette: Uh...okay, i this is creepy.
Suddenly, one of the "crows" tries to dive bomb her, but she dodges.
Ladybug: NGH!!!
She falls to her knees as one of the the "miner" stikes it's pickaxe on the grouns, creating a shockwave that heads towards her.
Ladybug: Oh no....
However, Chat Noir appears and tackles her, dodging the shock wave as it hits one of the nearby trees, knocking it down. They both get up.
Chat Noir: Are you okay?
Ladybug: No, i feel strange.
Chat Noir: You too eh? I need to talk to you when this is over.
Ladybug: Sure thing, but we need to deal with these things first.
Chat Noir grabs his staff and extends it as Ladybug grabs her Yo-Yo.
Chat Noir rushes the "miners", knocking them back with his staff, but they surround him. They launch shockwaves towards him, but Chat Noir dodges as them, causing friendly fire. He then falls on his knees.
Chat Noir: AGH!!! (heavy breathing) Their's no end to these things. I don't think i can last long like this.
At the same time, one of the "crows" attempt to dive bomb her, but she dodges. She then throws her Yo-Yo at it, tangling one of it's wing as it tries to escape as she tries to hold it back. The other "crows" then attempt to attack Ladybug by charging and dive bombing her. She manages to dodge them, but looses her balance and the tangled "crow" flies away, with Ladybug behind it.
Ladybug: WAHHH!!!
Chat Noir is still fending off the "miners" as he dodges their shockwaves. The tangled "crow" then charges Chat Noir, but he ducks. He then gets up and looks at it.
Ladybug: LOOK OUT!!!
Chat Noir turns around as Ladybug crashes into him, sending them flying onto the steps. As they lie on the ground, two stationary vulcan cannons appear in front them as they aim at Chat Noir and Ladybug.
Chat Noir: Looks like this is it. I would have never thought it would be like this. Well, at least i'm with my Lady.
Ladybug: Yeah, i just wish i was with...
Suddenly, a portal appears in the sky above them.
Ladybug: What the...
???: Mega Buster!
2 green plasma shots appear from the portal, and hit the cannons, destroying them as the blow up in a small explosion. Then a stranger appears from the portal, falling from it and lands on the ground. He then turns around, facing Chat Noir and Ladybug
vignette.wikia.nocookie.net/megaman/images/a/a4/SF3_Alt.jpg/revision/latest?cb=20131031055652
???: Are you okay?
Chat Noir: Yeah...who are you?
???: My name is....it's Mega Man!
Mega Man's arm cannon transforms back to a ordinary hand as he helps them up
???: Geo, more viruses incoming!
Ladybug: Who said that?
Megman: Where Omega-Xis?
The 2 more cannons appear in front of them and prepare to fire.
Mega Man: Get behind me!
Chat Noir and Ladybug gets behind Mega Man as he crosses his arms and a large green shield appears in front of him, just in time to block the shots.
Mega Man: Ngh..i..can't...hold it much longer.
???: Shock Note!
2 guitar rifts are heard behind them as huge musical notes appear and hit the cannons, blowing them up in a small explosion. They then turn around seeing a another stranger standing behind them.
vignette.wikia.nocookie.net/megaman/images/6/6b/HarpNote.jpg/revision/latest?cb=20080706234955
???: You okay, Mega Man?
Mega Man: Yeah, thanks, Harp Note.
Ladybug: Okay, just who are you two?
Suddenly, the "miners" surround them as the "crows" fly circles in the air above them. The four of them stand together with backs against each other.
Mega Man: Look, i know you have questions, but you'll have wait till we'rr done here.
Chat Noir: Sounds good to me.
Ladybug: Okay, let's do this!
Harp Note: Ready when you are.
Omega-Xis (???): Lets go buck wild.
A great fight is here along with new allies. Find out how it all goes down in Chapter 4: Discovery.