As the day goes by with the chocolate factory opened, selling chocolate, Rico looks outside of the window to see a green van driving by the mansion, parking by the side as he goes downstairs, outside to see a tall woman with long, spiky red hair in a ponytail, wearing a green hoodie jacket, a white shirt with the PPG symbol on her shirt, and a purple skirt. She was holding a golden ticket, showing that she was invited to visit him.

Rico: hi there, ma'am. Welcome to my mansion that's also a chocolate factory. My name is Rico Nepolio. It's nice to meet you.

Frankie: *smiles* it's nice to meet you too, Rico. I'm Frankie Foster and I was invited here from the golden ticket you sent me.

Rico: that's nice. Come inside, I have an outfit and a little treat for you to try out. It's a surprise, Frankie. *Wink*

Frankie: *chuckles* sure thing, little buddy. Lead the way.

She gets inside of his mansion, going upstairs to the changing room where she sees a lot of tracksuits, picking one that matches her. Frankie comes out, showing Rico her new small size light green tracksuit that's hugging her curves, and her butt crack fully showing. Rico smiles, giving her a stick of gum in her hand, looking at her examining it, and put it in her mouth, chewing on the delicious treat. Frankie looks around the mansion, seeing how the chocolate was being made by a machine that amazed her while chewing on the gum, and blowing a bubble.

Frankie: I gotta admit, your place is really awesome, Rico. I really love the gum you gave. It tastes so delicious, especially the free tracksuit that matches my jacket~.

Rico: thank you, Mommy Frankie. I'm glad you're loving this a lot. The gum is really special that it'll make you swell up really good~.

Frankie: huh? Swell up?

Rico: yes, Mommy, you'll start swelling up. Look at your nose turning blue already~.

Frankie's nose turns blue, spreading across her skin, making her whole body fully blue, blushing from this sudden transformation. She feels her belly now swelling up, lifting her top tracksuit as she smirks, patting her butt that's expanding really big in front of Rico, stretching out her pants to expose a lot of her crack. Rico smiles, walking to see her swelling up more bigger and rounder with her arms and legs sinking in her body, leaving her hands and feet sticking out from her divots, and her breasts gets more bigger like two giant water balloons. Frankie's cheeks puffed out with juice, moaning softly as she rock back and forth, her body finally stop inflating, and is now a 10 feet blueberry woman.

Rico: so, what do you think, Mommy Frankie? You're a big, round blueberry~.

Frankie: *muffled* I feel so full and juicy, but I love it, baby. It feels really good~.

Rico: *smiles* I'm glad you're loving it so much. It's fitting to have a big blueberry like you to be a foster~.

Frankie: *muffled* hehe, that's so sweet of you, Rico. What are you going to do to me~?

Rico: I'm going to give you a good time by rolling you around and giving you something special~. *Wink*

He put his hands on her large, blueberry butt cheeks, rubbing them together and smacking them playfully to make her moan softly. Rico rolls Frankie through the hallway to the living room, bouncing on her body like a trampoline, hearing her muffled giggles. Frankie was loving every moment of this, not wanting this to end. As they made it to the living room, Rico roll her on her back, pulling her pants down to reveal her wet, inflated pussy that's pulsing juice. He takes his clothes off, hugging her crotch and slowly put his member inside of her that made her gasp to feel him penetrating her gently.

Frankie: *muffled moans* oh dear. That was the gift you're giving me, baby~?

Rico: oh yes, Mommy Frankie. You deserve my little peepee inside of your Inflated crotch. I gotta breed my blueberry Mommy~.

Frankie: *muffled* keep it going for me. I never felt this good before. I want more~!

Rico: you got it, Mommy. Enjoy yourself and relax being a blueberry~.

He was panting, picking up the pace to keep filling her up more, pulsing out precum as he sees her inflated pussy pulsing out more juice, rubbing her clit more to push her to her limits. Frankie roll her eyes to the back of her head, flapping her sucked hands and wiggling her sucked feet in her divots as she gets closer to his climax.

Rico: *moans lustfully* I'm so close to letting it all out, Mommy Frankie. I'm not going to last any longer~.

Frankie: *muffled* yes, baby, yes. Let all of that cum out of you and fill me up completely. I feel like I'm going to let out some juice~.

Rico: I would love some juice, Mommy. I'll fill you up and you can give me your love juice~.

Frankie: *muffled panting* oh dear... Ahhh~!!!

She release all of her juice all over his face, moaning lustfully with hearts in her eyes while Rico licks it up from her blue pussy, thrusting until he came a lot deep in her womb. They panting, exhausted from their taboo, chuckling as Rico gets on top of Frankie's blueberry belly, resting his head on her large breasts, and look at her eyes with a big smile on his face.

Rico: *panting* that felt really good, Mommy Frankie. You're a really fun person doing this with me~.

Frankie: *muffled giggles* yeah, I didn't expect this to be so fun, Rico. Thank you so much for this~.

Rico: you're welcome, Mommy. Can I kiss you and nuzzles my face in your big boobies please~?

Frankie: *muffled* sure, baby. Come here so I can kiss you a lot~.

Rick leans closer to her face, giving her a big kiss, making out with her for a while as Frankie melts into the kiss, giving him some juice from her mouth to taste. They broke this kiss as Rico cuddle on her belly, using her breasts as pillows for him to rest his head on while hearing the juice sloshing inside of her body. Frankie was loving every moment of this day, even loving her new position as a big, blueberry Mommy for him that's way better than her job at the Foster's Home for Imaginary friends.