It was a normal and calm day outside for everyone, so the kids were playing a baseball game.

"Bottom of the ninth... Mazinsky is pitching... He's the best there is... Especially against kids who aren't invited and just show up to ruin everyone else's day... He is very amazing though..." Dylan narrated as he was playing baseball with his friends.

"Just throw the ball already!" Ariel Rodriguez, better known as AR, the daughter of Twister and Spinelli, complained.

"All right, all right." Dylan said and he soon pitched the ball once he was ready.

Ariel hit the ball with her bat.

"It looks like a home-run, ladies and gentlemen." Dylan continued to commentate.

"Darn right it is." Ariel smirked as she ran around.

The ball soon crashed in through the attic of the Mazinsky household's window.

"Ooh... My dad's gonna kill me..." Dylan sweat-dropped.

"Sure is, buddy, well, it was nice knowin' ya." Skipper smirked.

"Thanks for the support, guys." Dylan deadpanned.

"You want an open or closed casket?" Skipper continued.

"SKIPPER!" Dylan complained.

Skipper chuckled innocently.

Dylan rolled his eyes and soon went to his house, unlocking the front door, and snuck inside just in case his parents were home and he didn't know it, and soon went up to the attic to get the ball so Mike wouldn't bust him, but he soon found some old stuff. Michelle, Ani, and Layla followed Dylan inside without him realizing it.

"Wow... Look at all this stuff Dad collected..." Dylan commented as he took a look.

"Oooh~" Michelle said.

"Gah! Guys!" Dylan yelped.

"We thought you could use some help." Layla smiled.

"You guys scared me," Dylan said. "Uh, have you guys seen my parents out there?"

"Nope." Ani replied.

"I heard something in the kitchen though." Layla said.

"It was probably the dishwasher, help me find the ball and let's get out of here before Mom or Dad finds us." Dylan told them.

They soon began to look around.

"'Memories... Of... Nicktropolis'...?" Layla asked before looking through the book to see Mike's photos from Nicktropolis such as going to the Nicktoons Summer Beach House for the first time, then going back and eventually meeting the love of her life: Lil DeVille, and many adventures with SpongeBob Squarepants, then saw her with a large group of others such as Otto Rocket, Reggie Rocket, Arnold Shortman, Jimmy Neutron, a girl she didn't recognize, and even Eliza Thornberry as they seemed to be going on some kind of wacky adventure with a conjoined animal of a cat and a dog, AKA CatDog.

"Whoa, Mom and Dad must've had quite the adventure back in Nicktropolis." Dylan commented.

"Yeah." Michelle nodded.

"I've always had quite the adventures in Nicktropolis." Mike said as she suddenly appeared.

"DAD!" Dylan yelped. "Oh, uh, hi, Dad... Nice day, isn't it?"

"Mm-hmm..." Mike smirked slightly.

"Oh, look at the time," Layla said. "We gotta go."

"Bye!" Michelle added.

They soon zipped off.

"Wait!" Dylan cried out and groaned before smiling nervously to Mike. "Heh... Hi, Dad..."

"I see you broke another window..." Mike sighed. "I'll pay for that later."

"Sorry about that, Dad." Dylan chuckled nervously.

"Your mom and I go to the grocery store to get you and your friends some lunch and this happened," Mike rolled her eyes. "Oh, well, no one said that parenting would be easy, especially your Aunt Jen."

"Can my friends still come for lunch?" Dylan asked.

"Well... All right," Mike replied. "As long as you guys don't break anything else. It looks like you guys just had a round of Bean Bag Tag in here."

"We played baseball and I guess Ariel batted too hard." Dylan said.

"Heh, should've known," Mike replied. "She reminds me a lot of her mom."

"We'll be careful next time." Dylan promised.

"I sure hope so." Mike replied.

Dylan and Mike soon came downstairs while Lil made some lunch for the kids.

"By the way... Dad... I recognize the others in this book, but... Who's that?" Dylan asked, pointing to one girl in the group picture with CatDog and two other creatures which looked like a blue yeti and a green frog with a big nose.

Mike looked over to see where her son was pointing to see a girl in a dark green blouse, a long purple skirt, closed toe brown sandals, a golden necklace, and dark brown hair that reached her waist with pink barrettes. "Ah, that's CatDog's next-door neighbor," she then said from memory. "Her name's Valentina Nolan. I haven't seen her since Reggie and Otto invited me over to Nicktropolis for Parents' Day."

"Wow. She's pretty." Dylan commented.

"I haven't seen her since then..." Mike smiled. "That was an interesting adventure with CatDog... Looking for their long-lost parents..." she then muttered. "Even though those were adoptive parents."

Dylan looked like he wanted to know.

"Ah, well, we'll call you and your friends when lunch is ready." Mike said, walking off to see Lil in the kitchen.

"Wait! Dad!" Dylan called.

"Yes, son?" Mike replied.

"I want to hear the story." Dylan said.

"You and your stories." Lil teased Mike.

"You mean you don't like my stories?" Mike smirked playfully.

"You know that I do," Lil giggled. "Anyway, we should let Dylan listen to the story."

The other soon came into the house.

"Yo, Dylan, what's taking you so long?" Skipper asked before gasping. "Wah! Dylan's parents! We're dead!"

"Relax, kids, no one's in trouble," Mike replied. "IF you stay for lunch and listen to a story I'll tell you about CatDog."

The kids looked at each other and nodded before sitting down.

"Lunch will be a while." Lil said.

"Sounds good, Lil." Mike replied.

"You kids want pizza?" Lil smirked playfully as all kids loved pizza.

"Yaaay!" The kids cheered to that.

"It was a really long time ago," Mike said. "I think that Valentina girl just moved in. Otto and Reggie invited me over for the big celebration though."

We are shown in the old days as Mike checked her mail and saw an invitation to something called Parents' Day in Nicktropolis and she was invited by none other than Otto and Reggie Rocket.

"Hmm... I suppose I could go," Mike said. "I may be from Cartoon Network City, but Nicktropolis is my home away from home. It might be good to get out for a while." She went back to her house and went upstairs to start packing her things.

"It was going to be a big adventure for sure, I just didn't realize it, plus I was pretty excited to meet my friends and their families and hang out with them since I never really got to do that before," Mike narrated as she sped up the story so not to bore them with minor details about leading up to the big adventure. "I went to stay with SpongeBob since he was always like an uncle to me, and it was surprising there as well as Parents' Day was the next day, and I like to show up a day early to settle in."

Mike soon came up to the pineapple with her stuff and knocked on the front door.

Surprisingly, SpongeBob didn't open the door, but it was someone else she had not seen before. There was an orange sea sponge with black hair and blue eyes and was dressed in a purple matchbox dress with matching sleeveless pantalettes with purple high-heels and wore a pearl necklace.

"Yes, may I help you?" The sponge woman asked.

"I can't imagine I have the wrong address, but I'm looking for a SpongeBob Squarepants." Mike replied.

"Oh... Ohh! Oh, hi, there," The sponge woman smiled. "I'm sorry, dear, come on in. You must be one of those little friends he hangs around with."

"Uh... Yeah?" Mike replied. "Who are you though?"

"Oh, I'm sorry," The sponge woman smiled. "I'm Margaret, SpongeBob's mother."

"It's nice to meet you," Mike soon smiled back. "The name's Mike Mazinsky."

"Ah, yes, I believe SpongeBob's spoken about you before," Margaret smiled to Mike. "It's nice to meet you, dear."

"Nice to meet you too, Mrs. Squarepants." Mike smiled back.

There was another older sponge as well who was a man with a gray mustache and wore glasses with blue lenses. He was light brown with dark brown holes. He wore a white shirt, brown pants, a black and yellow belt, and a tall white hat with a brown stripe. He was talking to SpongeBob.

"That must be your husband?" Mike guessed.

"Yes, indeed," Margaret smiled. "That's my Harold."

"Ah. Hello there, son." Harold greeted the tomboy.

"Actually, sir, I'm a girl." Mike replied.

"...Really?" Harold asked.

"It's a long story," Mike said before smiling. "Hey! SpongeBob!"

"Oh, Mike, it's always so good to see you in the pineapple," SpongeBob smiled back. "Especially with Parents' Day being tomorrow."

"Yeah. Great." Mike replied softly.

"Oh, this is gonna be so great!" SpongeBob beamed in excitement.

Mike gave a small smile.

"We're all excited! Aren't you excited too, Gary?" SpongeBob smiled to his pet snail.

"...Meow." Gary replied.

"Good one, Gary." SpongeBob laughed to his pet snail.

"Reggie and Otto invited me over here, but I usually come over to SpongeBob's place," Mike said. "He really makes me feel at home."

"Aw, that sounds very nice." Harold smiled.

"You're welcome to come here any time." Margaret added.

"I know." Mike smiled as she was always a visitor in the Squarepants pineapple.

"It was just another normal night in Nicktropolis, and I decided to spend Parents' Day with SpongeBob and his parents." Mike narrated.

"That was nice of you, Dad." Dylan commented.

"Well, they insisted." Mike replied.

After unpacking and settling in for a while, Mike began to explore as the people of Nicktropolis were getting ready for the big day. Even the always traveling Thornberry family were going to be there to take Debbie, Eliza, and Donnie to the festivities as she met up with Otto, Reggie, Sam, and Twister.

"So, that's the infamous Eliza Thornberry, huh?" Mike commented once she saw the redheaded pigtailed girl.

"Sure is," Reggie replied. "Her dad has his own nature show and her mom shoots it so they travel all over the world."

"And you must be the famous Mike Mazinsky," Eliza said once she saw the tomboy. "It's nice to meet you."

"Ah, I don't know about famous, but it's nice to meet you, Eliza," Mike said. "I guess you're excited about hanging out with your parents tomorrow, huh?"

"Oh, I really am," Eliza smiled. "They're usually pretty busy, so I'm just excited that I get to hang out with them like this."

"That's great," Mike smiled back. "I'm happy for ya."

"Oh, thank you." Eliza replied.

"I gotta say that tomorrow is gonna be the best day ever." Reggie said.

"Thanks for letting me come over, I look forward to it." Mike smiled.

"Dad, was this before or after you met Mom?" Dylan soon asked curiously.

"Before, but I was going through a bit of a phase as you know from the time," Mike replied. "Also... I was so caught up in the festivities, that I never really thought about telling my Nicktoons friends about my own parents, but when I felt bad for CatDog, it started to unravel. Anyway, that part will come into play later on in the story."

"All right." Dylan then said.

"Eliza, you wanna come to the Shore Shack with us?" Reggie offered.

"Well... Okay!" Eliza smiled. "It's been a while since I had a nice chocolate shake."

They soon walked off to the Shore Shack together as everyone was getting ready for the big day tomorrow.

"I'm so stoked about this!" Otto beamed.

"Thanks for letting me come, guys," Mike smiled. "It's been kinda boring since Cartoon Cartoon Fridays is taking a little break."

"No problem, Mike." Reggie smiled back.

Mike smiled to her friends as this was nice so far for all of them. "So, Reggie, how's Arnold?" she then asked.

"Oh, he's fine..." Reggie replied. "Ya know; same old, same old."

"She talks about him every day." Otto told Mike.

"I do not!" Reggie complained.

"Reg, I've known you and Arnold since I first came here, and I've seen you guys like each other," Mike smirked. "You might as well come out with it now."

"Mike's right, you guys are tight." Twister added.

"Ugh..." Reggie groaned. "Fine... Arnold and I are pretty close."

"See? And there's nothing wrong with that." Mike smiled.

"I guess..." Reggie shrugged. "Think you can shut up Otto about talking about it though like he's six-years-old?"

"I'll see what I can do." Mike replied.

Eliza smiled as she was just happy to be with some kids her own age.

"Yep, we all sure had a good time together as friends." Mike's voice said.

"That's nice..." Dylan said as this seemed to go on for a while.

"When do we get to the good part?" Skipper asked impatiently.

"Hey, haven't you heard of setting up a story?" Mike replied. "I want you to feel like you were there. Every story needs a good set up, every story starts off slow, then you get to the meat in the middle."

"Just like Mom's stories about the times she would hang out with Uncle Dexter in his secret lab." Michelle smiled.

"Heh, I'm sure." Mike chuckled to the blonde girl.

"Anyway, please continue, Dad," Dylan said. "We wanna hear more."

'Yeah!" The other kids added in agreement.

"All right, all right, I'll cut to the next morning." Mike replied.

The kids smiled to that.