Here we open on Marcella soaring through the sky, the warm morning light gleaming off her deep brown skin. Marcella Belladonna, now adapted to the modern world, flies above the treetops, her long black hair now streaked with gold flowing in the wind. She glances down at the approaching town below.

Marcella: *smirking to herself* "Amity Park, huh? ‘Perfect Town’... Yeah, we’ll see about that.

She spots a large green road sign reading: WELCOME TO AMITY PARK – THE PERFECT TOWN. Her smirk widens as she descends in a nearby alley as Marcella touches down gracefully in the shadowed alley. She pulls a small, ornate mirror from her storage cube and admires her reflection.

Marcella: *flashing a teasing grin* Still as gorgeous as ever.

Marcella runs a hand through her hair, then glances down at her attire—her old blue dress.

Marcella: *frowning slightly* A hundred thousand years, and I’m still wearing this old thing? No, no, no, this won’t do.

With a snap of her fingers, a shimmer of dark red energy envelops her body. When it fades, she stands in a blue cropped tank top with a red oval emblem, light blue denim-style short shorts, and red-and-white sneakers. She retains her glasses, adjusting them slightly before checking out her new outfit.

Marcella: *spinning in place* Mmm… hugs my bottom just right. I like it."

With a confident chuckle, she steps out of the alleyway, ready to explore.

Meanwhile, across town, Danny is running for his life. He dashes down the street, panting heavily, while his ever-persistent bully, Dash, barrels after him, seething with rage.

Dash: *shouting* That’s it, Fen-ton! Run! But I’m taking this ‘D’ on our spelling test out of your hide!

Danny, gasping for breath, glances back over his shoulder.

Danny: *to himself, exasperated* Every time he fails, he comes after me!

Dash is still gaining on him. Danny pushes himself forward, zigzagging through the sidewalk, narrowly avoiding pedestrians.

Danny: *desperate* Keep moving, keep moving—!"

Suddenly, a hand grabs him from the side and yanks him into a dimly lit alley.

Danny: *startled* Wh—!?"

Before he can react, he is pulled straight into someone’s chest—a soft, warm, very ample chest. His face flushes bright red, his muffled protests lost against… well, the fabric of someone’s top.

Danny: *muffled* Mmff!?

Marcella: *calmly, amused* If you value your life, hush.

Danny stops struggling for a second, utterly confused and flustered. He slowly tilts his head up, his face still buried in cleavage, to meet Marcella’s smirking gaze.

Back outside the alley, Dash skids to a stop, looking around wildly. He huffs, placing his hands on his knees, scanning the area.

Dash: *grumbling* Where’d that dweeb go?!

After a few more moments, he gives up and jogs further down the street, convinced Danny ran ahead.

Back in the alley, Marcella watches Dash disappear with mild interest before slowly releasing Danny. He stumbles back, his face still beet red as he gasps for air.

Danny: *flustered, breathless* Who—what—why—?!

Marcella leans in slightly, her fangs barely visible as she smirks at him.

Marcella: *teasing* You’re cute when you’re flustered.

Danny gulps, suddenly feeling like he’s in way more danger than when Dash was chasing him as he stumbles back after Marcella lets go, his face still red from embarrassment. He takes a deep breath to regain his composure

Danny: *scratching his head, awkwardly* Uh… thanks for the, uh… interesting save.

Marcella: *straightens up, placing a hand on her hip* *politely* Apologies, my name is Marcella Belladonna. *adjusts her glasses slightly* It is a pleasure to meet you. And you are?

Danny: *blinking* Oh, uh—Danny Fenton. Nice to meet you, Marcy.

Marcella raises an eyebrow at the nickname but lets it slide.

Danny: *curious* So, I gotta ask… why did you save me just now? You're new in town, barely know anyone, and you just helped a complete stranger who also happens to be a complete nobody.

Marcella: *smirking* Let’s just say I’m no stranger to helping people… besides, I couldn’t let you get hurt by that brute.

Danny: *chuckles, shaking his head.*Heh, wow. Not even five seconds, and someone already hates Dash.

Marcella smiles, revealing sharp fangs. Danny’s eyes widen, and he instinctively takes a step back.

Danny: *startled*Whoa! Those are fangs! Are those—are you—?!"

Marcella: *quickly composes herself* *calmly*A medical condition.

Danny: *blinks, processing that* *shrugging* Huh. Weird, but okay. *pauses* .So… did you just move here?

Marcella:.nodding* I did. Just arrived in America and wanted to get a lay of the land. I start school here tomorrow.

Just then, Marcella’s stomach growls. She places a hand over it, slightly surprised, while Danny smirks.

Danny: *teasing* Guess even with a medical condition, you still gotta eat."

Marcella: *chuckling* Indeed. Is there a good place to eat around here?"

Danny: *grinning* We could always go to Nasty Burger."

Marcella: *tilts her head, a little confused by the name* Nasty… Burger?

Danny: *reassuring* Yeah, I know it sounds gross, but trust me, the food’s actually good."

Marcella considers this before nodding.

Marcella: Very well. Lead the way.

We later see Marcella and Danny at Nasty Burger where the fast-food joint is buzzing with customers. At one booth, Marcella is seated across from Danny, devouring a shocking amount of burgers. Danny watches, wide-eyed, as she finishes another and grabs yet another.

Danny: *Stunned* Uh… wow. You can really put those away

Marcella: *dabs her mouth with a napkin, amused by his reaction* I suppose I was hungrier than I thought.

As she eats, her eyes briefly glow red. She subtly examines Danny, sensing something… off. His aura feels almost supernatural, ethereal—as if two energies were fused together.

Danny: *notices her staring and tilts his head* Uh… something wrong Marcy?

Marcella: *quickly looking away, shaking her head* It’s nothing. Just… an odd feeling.

Before Danny can ask more, a sudden commotion erupts. Several ghostly crows burst through the windows, followed by a swarm of ecto-pi, their glowing tentacles flailing. Customers scream and panic ensues.

Marcella: *raising an eyebrow* Ghosts?

Danny: *sighing, standing up) Heh. Yep. Welcome to Amity Park. *pauses, then quickly thinks of an excuse* Uh—I, uh, gotta go… use the restroom!

Marcella: *calmly* Alright. Do what you must do.

As Danny rushes off, Marcella watches with growing curiosity, sensing something very unusual about him. Her lips curl into a knowing smirk as she takes another bite of her burger.

Marcella: *to herself, intrigued* Interesting…

Marcella slipped away from Nasty Burger in a different direction as we cut to Danny, now Danny Phantom flies through the air, blasting away ghostly creatures—crows with glowing green eyes and writhing ectoplasmic octopi.

Danny: I try hanging out with a hot new girl, and the universe just has to interrupt me.

An ecto-pus lunges at him, tentacles flailing. Danny dodges, but another one slams him into a brick wall. More ghosts swarm.

Danny: *groaning, pinned down*  Oh, man…

Just as they’re about to strike, a giant red fist—glowing with supernatural energy—SMASHES into the ghosts, sending them flying.

Danny looks up to see a tall, slender figure: Marcella Belladonna in her vampire form. She has deep brown skin, striking red eyes, and long black hair with vibrant red streaks. She wears a red tank top with a small emblem, dark blue shorts, and blue-gray sneakers. Her black-framed glasses rest on her nose as she stands over him.

Marcella: *cracking her knuckles, smirking* Back off, spooks. This one’s my meal ticket."

Danny: *blinking, confused* Wait… what?!

Marcella: *grinning, cutting him off*Ask questions later—right now, we need to fight for our lives.

Danny: *shrugging, charging up an ecto-blast* Fair point.

They launch into battle, fighting back-to-back. Danny zaps an ecto-pus, sucking it into his thermos, while Marcella tears through ghost crows with clawed hands and supernatural speed. She grabs an ecto-pus and drains its energy, causing it to wither before she tosses it aside as she sees Danny using the Fenton thermos to capture the rest of the ghosts.

Marcella: *watching the thermos in action* What sort of magic is that?

Danny: *chuckling, tossing another ghost inside* Not magic—it’s sci—wait a second. That doesn’t explain who you are or what you are! I’ve never seen a ghost like you.

Marcella: *laughs, hands on her hips. Oh, sweetheart, I’m no ghost. Well… not exactly.

Danny: *skeptical, arms crossed* You expect me to believe that?

Marcella: Believe it or not, I’m a vampire.

Beat. Danny stares at her before laughing in disbelief.

Danny: *Laughing* "Pfft! Vampires aren’t real!

Marcella raises an eyebrow, flashing her razor-sharp fangs.

Danny: *his laughter dying off, realization hitting him* Oh… you’re serious.

Marcella: *grinning* Bingo.

Danny: eyes her warily, lowering his guard slightly.

Danny: Alright… Let’s talk somewhere private.

Moments later, we see Danny and Marcella land on a nearby rooftop, the neon glow of Amity Park flickering below

Danny: Alright. Who are you?"

Marcella: *casually adjusting her glasses* We met a few hours ago.

Danny: *confused* Met? I don’t even know you—

Marcella smirks and shifts back to her human form—her fangs retract, her red eyes turn brown, and her clawed hands soften. Danny’s eyes widened in shock.

Danny: *stunned*  Marcy?!

Marcella: *mock-surprised, grinning*Oh wow, you noticed. You do pay attention.

Danny: *stammering, pointing between them* Wait, wait, wait—you know I’m me? The whole… half-ghost thing?

Marcella: *grinning, crossing arms* Sweetheart, I saw you phase through a door to the bathroom. Either you’re the world’s best magician, or you’re something else entirely, Danny Fenton.

Danny: Uh… wh-whaat? Danny Fenton? I’m sure he’s back at Nasty Burger, probably waiting for you—

Marcella gives him an unimpressed look. Danny sighs, rubbing the back of his head.

Danny: Yeah, you’re not buying that, are you?

Marcella: Not even a little.

Danny sighs and transforms back into his human form

Danny: *rubbing the back of his neck* Okay… yeah, you got me. I’m half-ghost.

Marcella: *smirking* I know.

Danny: *pauses, then eyes her suspiciously* Wait… so how’d you get ghost powers?

Marcella: *sheepishly taps her fingers together* *innocently* You remember that vampire that bit you a long time ago?

Danny: *thinking* Yeah but why would you… *suddenly stiffens, realization dawning* Wait. That was YOU?!

Marcella: *winces, giving a nervous smile* *softly* Yeah, sooo… my bad?

Danny: *stunned* You drained me! *groaning* Why?!

Marcella: *hands up defensively* I was in a feral state! My hunger was out of control!

Danny: *still skeptical* And now what? You’re not going to drain me?

Marcella: *mock offense* Please, I already had a taste. And trust me—your ectoplasmic blood was delicious.

Danny looks a little unnerved.

Marcella: *sincere* But jokes aside, I am sorry. Really.

Danny exhales, running a hand through his hair before sighing.

Danny: *reluctant* …Alright. I believe you.

Marcella: *smiling* Good boy.

Danny: *grumbling* Don’t patronize me.

Marcella: *playfully smirking* Can’t help it, you're easy to patronize.

Marcella then explains her backstory, detailing her past, Paula Sandu’s murder, and her grudge against Izzy Manson. Danny listens, frowning when she mentions Sam’s ancestor.

Danny: Wait, wait—Sam’s great-granddad killed your girlfriend?

Marcella: Wife actually, but yeah he did.

Danny: That’s… kinda messed up.

Marcella: Tell me about it.

Danny: *changing the subject* So, if you’re a vampire, does that mean you sleep in a coffin or something?

Marcella: *dryly* Do I look like I have a coffin?

Danny: *shrugging* Fair point. Do you even have a place to stay?

Marcella hesitates, looking away.

Marcella: *muttering* …Not exactly.

Danny watches her, then exhales.

Danny: *thinking, then nods* Alright, then you can crash at my place.

Marcella: *surprised* Wait—you’re inviting a vampire into your home?

Danny: *half-smiling* Wouldn’t be the weirdest thing I’ve done.

Marcella studies him, then smirks.

Marcella: *teasing* Careful, ghost boy. You might just be my type.

Danny rolls his eyes as they take off toward Fenton Works under the moonlight as we see Danny and Marcella land outside the Fenton family home. The "Fenton Works" sign flickers slightly in the moonlight. Marcella folds her arms, surveying the house with a raised brow.

Marcella: Nice place, great atmosphere. *Glancing at Danny* So.. do they know you're half-ghost too? And about the accident?

Danny: *Averting his gaze* No, they don’t… and I’d like to keep it that way.

Marcella: *Frowning* Why? They're your parents. I’m sure they’d understand.

Danny: *Scoffs* Yeahhh… about that. They’re not exactly the understanding type. Plus, they’re, you know… ghost hunters. Soo…

Marcella blinks as realization dawns on her.

Marcella blinks, then slowly pieces it together. Her lips curl into an amused smirk as she leans slightly toward Danny.

Marcella: Ohhh. Oh, okay, I get it. Yeah, they’d definitely freak out if they found out their son was half-ghost. Then again… *Smirks* though if they ever noticed the similarities between you and your alter ego, they’d probably put two and two together.

Danny: *Sighing* Yeah… they probably would.

Danny opens the door, motioning Marcella to follow as Marcella steps inside, glancing around. The house is a strange mix of cozy and chaotic, with Fenton tech scattered among family photos. She nods approvingly.

Marcella: Nice place. A little… eccentric, but cozy.

Before Danny can respond, Jazz walks into the room, arms crossed.

Jazz: *Hands on hips* Danny, you’re late. It's way past curfew—

She stops mid-sentence, noticing Marcella towering over her younger brother.

Jazz: *Raising an eyebrow* Uh… who's this? And are you a model or something?

Marcella smirks, placing a hand on her hip, striking a playful pose

Marcella: Flattering, but no. I just like to look good.

Jazz eyes Marcella’s outfit—her form-fitting blue crop top, short denim-style shorts, and red-and-white sneakers. She raises an eyebrow

Jazz: And… uh, that outfit? It’s a little, you know, revealing for Amity Park.

Danny, standing beside Marcella, groans internally, already sensing where this is going

Marcella: *grinning, completely unbothered* I think it looks nice on me. The short shorts hug my bottom quite nicely, don’t you think?

Danny: *chokes on air, face instantly heating up* *flustered, throwing his arms up* Oh, come on!

Marcella turns to him, smirk widening.

Marcella: Oh, please. You’ve been staring at my tushy on the way here.

Danny sputters, waving his hands wildly as Jazz snickers, enjoying his suffering.

Danny: I—I was not!

Jazz: *grinning, nudging Danny’s side* Smooth, little brother. Real smooth.

Before Danny can protest further, Maddie enters from the kitchen, adjusting her gloves. She pauses when she spots Marcella, her expression softening with motherly curiosity.

Maddie: Danny, is this your girlfriend?

Danny turns beet red.

Danny: *panicking* No! No, no, no, no! This is Marcella Belladonna! She’s new in town!

Jack Fenton suddenly enters, chomping on a half-eaten ham sandwich. He glances at Marcella, then at Danny, then grins widely.

Jack: Who may or may not be Danny’s girlfriend!

Danny: *exasperated* She’s not my girlfriend!

Marcella: *raising an amused eyebrow, hands up in mock surrender* And I assure you all, I have no romantic intentions with your son.

Maddie watches the exchange, intrigued. Marcella shifts her stance, her playful demeanor fading slightly as she takes a breath.

Marcella: Mrs. Fenton, I wanted to ask something.

Maddie: Of course, dear. What is it?

Marcella hesitates for a moment before speaking, her voice softer, more vulnerable.

Marcella: I… I’m new in town. And I don’t have anywhere to go. No home, no family.

(A heavy silence falls over the room. Jazz’s teasing expression immediately vanishes, replaced with genuine sympathy. Without hesitation, she steps forward and suddenly wraps her arms around Marcella’s waist, hugging her tightly.)

Jazz: Oh, you poor thing! Don’t worry, you can always live with us!

Marcella stiffens slightly, caught off guard. She awkwardly pats Jazz’s head—since Jazz is slightly shorter than her—and glances at Danny with a bewildered expression.

Marcella: *deadpan, still patting Jazz’s head* Is this… normal for her?

Danny smirks, crossing his arms.

Danny: Yup. Welcome to the club.

Jazz finally pulls away, beaming.

Maddie: *smiling warmly* Of course, dear. You don’t deserve to be homeless… or to be an orphan.

Jack: Plus, I can blabber about ghosts with you!

Jazz: Dad! Marcella clearly doesn’t want to deal with your ghost stuff.

Marcella: *smirking slightly* Actually, I wouldn’t be opposed to the idea. I’ve studied supernatural stuff myself.

Jazz: *blinking, impressed* Really?

Marcella: *grinning* Yep.

Danny sighs, rubbing his temples.

Danny: Sooo, does this mean she can stay?

Jack: Of course! The Fentons never leave the homeless outside!

Marcella smiles, genuinely grateful.

Marcella: Thank you.

Later that night in Danny's room, Danny tosses his shoes into a corner, stretching as he gets ready for bed. Marcella leans against the doorframe, arms crossed.

Marcella: By the way, I’m going to Casper High tomorrow.

Danny: *pausing mid-stretch* Wait, you’re going to school here too?

Marcella: *grinning* Yep. My adoptive dad said it would be a nice way to broaden my horizons. And who better to help me with human school than my personal little tour guide-slash-blood bank?

Danny groans, giving her a deadpan look.

Danny: Ha ha. Very funny. Let’s just go to bed. We’ve got a busy day tomorrow.

Danny turns to leave for his room. As he does, Marcella goes to her bedroom and she snaps her fingers, and her outfit instantly transforms into a sleek purple nightgown. She checks herself out in the mirror, smirking before climbing into bed.

Marcella: *muttering to herself, amused* Modern fashion is definitely growing on me.

She settles into bed, the Fenton household quieting for the night as the screen fades to black.

Next: Chapter 5: Vamp on Campus Part 1