Parking near a house, Mario, Luigi and Peach are out of the van with Mario and Luigi being equipped with plumbing tools with Peach following the bros from behind.

A doorbell rings with Mario and Luigi standing in front of the building.

"So, you go around other people's houses to clean their pipes. Interesting job you guys have." Peach said while observing the work the twins are doing.

"Well… We're doing this to help people and get paid." Luigi answered.

"I see." Peach is surprised to see what the duo are doing.

"Also, you asked for this, so you better watch and learn, princess." Said Mario.

Before the trio continues their small talk, a door opens as a woman sighs with relief.

"Thank you for coming, boys. I always thought you guys were busy, but I guess I'm the first person to call you." The woman laughs.

"Actually, you're the second person to call us. The first was a warehouse that is about dead cats." Mario said as he grumbled.

"Dead cats?"

"Nothing!" Mario and Luigi quickly exclaimed.

"Ahem! Anyway, let's see the problem." Mario walks past with Luigi as Peach is still standing by the door while curious about the brothers.

Before the woman moves, she halts as she sees a blonde woman in a dress that is Peach.

"Oh? Are you with the boys as well?"

"No. I just tagged along because I wanted a lift with these two." Peach answers calmly.

"Oh. I see. That's a beautiful dress, are you cosplaying? Is this for the party?" The woman asked.

"Not really. I was just dropping by. Since Luigi and shortstack are plumbing your house, may I come in?"

"Why yes, young lady, of course you can." The woman opens the door widely while letting Peach in the house building.

Finally, Peach is able to see if Mario and Luigi are doing their jobs as they did earlier after calling them through the phone, even after watching their adverts.

Maybe Peach doubts their abilities as plumbers, considering what they did is just a toilet.

Later in a bathroom, Mario and Luigi can see the bath is still there while the plug is off, meaning there's a clog in there.

Mario then grins as he's doing his job for real.

"Luigi, give me the plunger."

"Okay! Here!" Luigi salutes and then hands over the plunger, only for Mario to grab it like a gun and raise it above his head.

Finally, Mario pulls it up and down as hard as he could whereas Luigi is twisting the sink pipes and cleaning the toilets, giving them the advantage to fix the bathroom without disturbance.

As Mario finally sees the bath water going down, Mario exclaims with excitement while raising his plunger.

"AHA!"

"Meow!" What's on his plunger is a cat that is all drenched.

"What the!?" Mario exclaimed in shock.

"MEOW!" The cat yells as it jumps onto Mario, leading Mario himself to yell out in pain.

"AAH! LUIGI! HELP!"

"Mario! Don't worry, bro! I got y-"

Before Luigi catches Mario, he ends up getting landed on by the toilet, which is clearly flushing, as a cat leaps away and hisses at Mario and runs away.

After crashing on to the toilet, a necklace with a sun with a star in the middle is flying off of Luigi's overalls, causing Luigi to shriek.

"My medallion!"

"Oh no you don't!" Mario hastily catches the very medallion that Luigi had almost lost through a plug, leading Mario to sigh in relief. "Phew… That was close. Here, bro."

"Thanks, bro." Luigi also sighed while putting it back on around his neck, leading the Mario bros to halt as Peach slams the door open with shock.

"That medallion… Luigi, where did you get that from?"

"Easy, Luigi had it since he was a ba-" Mario was pushed aside by Peach as Peach herself went straight towards Luigi out of shock.

"Not you, shortstack! I'm talking to Luigi! Where did you get it from!?" Peach asked as Luigi raised his arms with surprise.

"W- Well… I can't remember, but I had it when I was a baby. I was told that the person who gave it to me will return to see me so I could thank him or her." Luigi answered in honesty.

"Luigi, that medallion was the oldest thing that was worn by those immortal people. That means the one you will meet might be younger than you by now." Said Peach.

"Haha… Funny story, but we're actually younger than you think." Luigi laughs.

"Huh?"

"Yeah, Luigi and I are 23." Mario reveals his and Luigi's age, causing Peach to exclaim in shock.

"Huh!? B- But I thought you're both thirty-something!"

"I know our moustaches make us look older, but we're not that old." Mario rubs his moustache while telling Peach the truth.

"But… I'm 22." Peach reveals her age to the brothers out of shock.

"Huh!?" Mario and Luigi exclaimed.

"But you look more 18 or 19!" Mario stutters.

"Implying that I'm a teenager!? Hmph, I guess shortstacks like you have absolutely no respect! At least Luigi has some sense of one!" Peach scoffs while looking away from Mario, causing Mario to pick himself up and pull Peach's dress top closer to him.

"Now listen here, princess! There's things that I hate here, it's people who're disrespectful and insensitive to the point that they're no better! You're just like that idiot Foreman Spike, those who bullied my little bro, even worse, my old man!" Mario snaps.

Peach halts after hearing Mario's outburst, only for her to realise that something happened to him made him like this and what she did was open him up like an eggshell that is cracked open.

"Bro…" Luigi reaches his arm towards Mario as Mario lowers his head, sulking as he pushes Peach off of him.

"Let's go. We worked our hardest here." Said Mario.

"O- Okay. Sorry, Peach." Luigi apologised by raising his green cap and ran by following his brother down the stairs.

In Peach's case, it reminded her of something that hit her in the past, knowing what she did is making things worse.

All she's here for is more research from around the globe as a way to enhance her kingdom and create a new society that her people are living in.

Falling to her knees, Peach felt the pain on her heart after witnessing the things she had done.

Downstairs.

A woman brought out her cash as Mario and Luigi thanked her and then finished their drink as they're about to go.

"Wait."

Mario and Luigi stop after seeing Peach approaching the duo downstairs while looking less prideful and more calmer, yet stressed out.

"You forgot about me." Said Peach.

"Oh that's right, she was with you two. She is a very kind woman. I bet you three are close friends." The woman giggles.

"A- Actually, we just met!" Luigi laughs nervously.

"Oh? It feels like you're close friends."

Mario ignores the discussion and opens the van door outside as Luigi and Peach follows.

Finally, the van takes off as the woman waves bye to the trio.

"Bye! I hope you help more people in need!" The woman shouts.

At least they got paid, leading them to take a trip to a different place where they can relax.

Later in the evening, the van stops at Mario and Luigi's house which surprises Peach, witnessing the place the bros live in.

With Mario, Luigi and Peach leaving the van as Mario and Luigi walk to their house, Mario and Luigi can feel some hostility coming towards them.

"Tch! I thought you showed up. Blackie." Mario called as he turned his head.

"Well, if it ain't the Stupid Mario Bros, coming home with their stinky hands on the doorknob. You didn't wash your hands after work, did ya?" A tall muscular man in shades with a black bushy beard, Foreman Spike arrives as he laughs at the Mario bros.

"Hello to you too, Spike." Luigi nervously waves while going behind Mario.

"Trying to annoy us because you want to?" Mario asked in a bitter tone, glaring at Spike out of malice.

"Nah! I just wanna say, thanks for plumbing this lady's house earlier! Boy, I did a number at her toilet! But hey, at least I used the air freshener." Spike laughs mockingly.

"Don't wanna hear it." Mario growls.

Peach clears her throat while approaching 3 grown men that are starting to argue with each other.

"Excuse me. Who is that hunk?" Peach asked out of curiosity.

"Oh him? That's Foreman Spike from the wre- !?" Interrupted by getting pushed along with Mario as Luigi and Mario hit the wall.

"Why hello, beautiful! The name's Spike, working at the wrecking crew." Spike went closer while pulling his shades and leaning on a light pole. "So, it seems that we're a match made in heaven, don't you think so?"

Peach doesn't know whether to scream or slap Spike in the face, given the impression that Spike is flirting with her.

"Uhh…"

"How about dinner? Or maybe a movie? Seeing as you cosplay, maybe a party?" Spike asked.

"No. Sorry, I'm not interested in perverts like you." Peach responds bitterly.

"Aww… Well, too bad." Spike sighed with disappointment as he shrugged his shoulders.

"Hey, Blackie, are you done flirting with princess?" Mario called while lifting Luigi up and patting himself.

"Oh come on, Mario, she ain't even your type. There's no way you can get any ladies. You and your brother are just losers thinking about plumbing and nothing else. Even Luigi wears that dumb necklace for a while and never takes it off." Spike said while walking around Mario and Luigi.

With Luigi protecting the medallion on his neck, Mario defends Luigi as he's preparing to take the hit.

"Face it, Mario. Get this through your tiny brain. You're a joke, and you always will be. You think you're so goody goody, but deep down inside, you're an even bigger jerk that's only using Luigi to make everyone love you." Spike pokes Mario's forehead while verbally piercing Mario's heart.

"That's not true! Mario is never like that! He always helps me when I'm crying! He even helps the poor, gives food and money, helps the children at the orphanage when I'm also around, even feeding stray cats and dogs!" Luigi protested while defending Mario.

"Just because he's a mama's boy, doesn't mean all that is his true nature. You'll soon learn his secret behind you. He doesn't love you, he loves taking credit from you. Face it, Luigi, he's lying to you."

This caught Luigi off guard as he turned towards Mario, seeing Mario looking miserable after being exposed by Spike.

"Mario…"

Spike then walks away while laughing. "I hope your payment is minimal, because who'll be calling your plumbing? I bet nobody will!"

This leaves the Mario bros to feel down after hearing what Spike had said to them, causing Peach to hold her heart, panting out of shock after seeing what Mario and Luigi reminded her of.

Then she shakes it off and then walks towards Mario and Luigi while putting her hands on her hips.

"Hmph! Some hunk he is. He should be ashamed of himself. Flirting with the royal princess and insulting a couple of bystanders. He's the type of guy I can't stand with." Peach spat out of disgust after seeing this drama.

"Just forget it. Let's just go home already." Mario said while trying to cheer up, for him to open the door.

Later in Mario and Luigi's house.

"We're home!" Luigi called with him and Mario taking off their boots and their caps.

"Mario! Luigi! Welcome home!" Mario and Luigi's mother appears as she hugs her sons with happiness, making the twin brothers hug back.

"Mario, Luigi, I see that you're back from your plumbing duties." Pauling giggles while standing by the stairs.

What stops Pauline and Mario's mother is the very person that Mario and Luigi brought home with.

"Oh? Who is this? A guest?" Mario's mother asked with surprise.

"Um… It's a long story." Luigi chuckles nervously.

"Sorry, but I am… Peach Toadstool. Here to be your guest for tonight." Peach courtesy while being respectful to Mario's family.

"Wow. I didn't know you boys brought in a girl. I think one of you is a lucky boy." Pauline pulls a teasing smile while wrapping her arms on her little brothers as she giggles.

"Pauline. Sis, she's not my girlfriend." Mario sighed.

"Also, she's not my type." Luigi points out.

"Ah. Shame. Also, why is her name Peach? Isn't it kinda strange for a human being to be named one, unless it's a nickname." Pauline had a feeling that Peach is the odd one out of this household.

"True." Mario and Luigi said at the same time.

"It's nice to meet you, Miss. Toad… Stool?" Mario's mother stops herself after realising how strange Peach's name was compared to others she met.

"Please call me Peach, ma'am. It's nice to meet you too. You're Luigi and shortstack's mother, right?"

"Why yes I am, Peach. They may not look like it, but those two are my baby boys." Mario's mother couldn't help but love her sons, Mario and Luigi.

"Mama…" Luigi blush while looking away out of embarrassment.

"Seriously? Too soon, mama." Mario is also embarrassed after hearing what his mother said about him and Luigi.

This had Pauline laughing and then approaching Peach with a positive smile.

"I hope you're okay with my baby brothers. They're actually the most generous boys that I have. I'm Pauline, Mario and Luigi's big sister. It's nice to see you, Peach." Pauline introduces herself while raising her hand.

"Oh? It seems that these guys have the most caring family. Hmph, it's nice to meet you too, Pauline." Peach shakes Pauline's hand while being respectful towards the people that raised Mario and Luigi.

"Hey, boys. Tonight is spaghetti for dinner."

"Oh boy!" Mario and Luigi exclaims with excitement as they're cheering up.

"Let's-a-eat!" Mario cheers while walking with Luigi and their mother.

"Hehe. Wanna join us for dinner?" Pauline offers with a warm smile.

"I would gladly have a meal with your family, Pauline." Peach willingly accepts while entering and takes off her heels.

"I recommend you change your clothes. You don't wanna mess up your cosplay."

"I'll be alright. It's actually washable." Peach waves her arm, deciding not to take off her pink dress.

"Alright. Suit yourself." Pauline shrugs her shoulders as she's about to join her mother and brothers at the dinner table.

In the end, Peach is able to see more of what the world has to offer which could mean more research meaning the better the kingdom improves.

At least she's having dinner with the fellow humans she meets.