Heyyy everybody its me Horroerfan247, so this is a crossover story that I have often about for a few months. Since there are already good crossovers of Steven Universe on here with other cartoons, why not do it with Nicktoons Unite? So this will be after Globs of Doom, and the storie will be entirely original so yea. Please read, review, no flames, and follow and i don't own any characters so thanks.

It was a warm day today in Beach City. Steven Universe and his best friend Connie had just got done training with Pearl and are now just sitting on the beach looking into the ocean

"Hey Steven. Do you sometimes feel that your out of the place with the Gems?" Connie asked him. Steven usually always thought that the Gems blamed due to his mom giving up her physical form to create him.

"Well...I don't know Connie, I mean...I probably won't ask them because I'm nervous to what they would say." Steven spoke very casually.

The kids just stared back into the sea until Connie told Steven that she had to go home, and so she left and Steven went inside the house. Garnet, Amethyst, and Pearl, The Crystal Gems. rushed over and were really panicking over something.

"Steven...we are in trouble." Pearl spoke.

"Whats wrong Pearl?"

Pearl was gonna speak until Garnet interrupted.

"Someone or something somehow broke into the burn room and stole a majority of the corrupted gems we collected." Steven was really shocked at this discovery.

"Oh No! Who could do something like that?"

"We don't know dude, that's what we are trying to find out." Amethyst spoke. "But the problem is that no human or other Gem can enter the burn room except for us." Pearl franticaly spoke. Steven was about to say something until all of a sudden a green light appeared and out came a very short robot. The Gems prepared their weapons until Steven stopped them.

"Stop guys,maybe the robot wants to tell us something."

"The robot turned to the wall and bought up a video projector which fuzzed alot, after a few static screeches a short bald man wearing a lab coat and glasses appeared.

"Hello Crystal Gems... I am Professor Finbarr Calamitous." But before Clamaitous could say anymore, Amethyst just laughed at him.

"HAHAHA Finbarr? What kind of name is that?HAHAHA." Amethyst was silenced by Garnet.

"What do you want Mr. Calamitous?" Calamitous just smirked.

"Well my dear Garnet...I'm glad you asked." Calamitous pointed to cart of his that had the bubbled corrupted gemstone them. the Crystal Gems and Steven were shcoked.

"YOU TOOK THE GEMS!" Pearl spoke pulling out her spear.

"Yes I did dear Pearl." Garnet was angry as well.

"What are you doing with those Calamitous... you have no idea what they are or what they are capable of."

Calamitous smirked again. "Oh Garnet...you so unpredictable. You see I have been studying your world and I have discovered that these Gems have a strong sense of energy, and energy so great that these could be great use to me." Steven looked angry and spoke.

"Those gems don't belong to you, whatever your gonna do to them, we are going to stop you."

Calamitous laughed at the hybrids remark. "Hahaha, that's funny. You have no idea where I am, or what world I am in. So you all might as well forget about it. HAHAHA" and with that the projector failed and the robot just shut down automatically. Garnet angrily smashed the robot to pieces with her gauntlents.

"NOW what are we going to do? That human has the gems and he might use them for evil purposes." Pearl spoke worridly. The others were worried as well.

"I agree with Pearl" Steven spoke bravely. "We have to get them back, we just don't know where that man is though..." But at that moment another green light entered the room and out came a young boy wearing a red t-shirt with an neutron on it, blue jeans, and white tennis shoes.

The boy spoke to them. "Listen, I know you guys have alot of questions, but you have to come with me to Volcano Island NOW." Steven and the others didnt know what to say but just agreed and followed the mysterious boy in the portal.

Volcano Island

Steven, the Gems, and the boy arrived at the lair on Volcano Island. It looked cool with hi-tech gadgets and stuff. Steven looked around the place with awe, and so did Amethyst, but Pearl was a little nervous and Garnet was just quiet. The boy introduced himself to the Gems.

"I'm Jimmy Neutron, welcome to Volcano Island. I know you have many questions but you have to meet he others first."

four others appeared in the room, one was about Steven and Amethysts height, he had buckteeth, a pink hat, pink t-shirt, and was wearing blue pants. The other boy was a teenager who was wearing a black jumpsuit, white boots, white gloves, and had green eyes and white hair. The next was also Steven and Amethysts height but he wasn't was yellow and square, had buckteeth, and was wearing brown squarepants. And finally there was a boy who was wearing tribal clothing that had purple markings on his face, and was wielding a staff.

"This is my friends and teammates. Timmy Turner, Danny Phantom, SpongeBob Squarepants, and Tak. And together we are the Nicktoons...I know it doesn't sound cool but we had to come up with something." Steven and Amethyst went over to SpongeBob to check him out a little bit.

"S-SpongeBob?" Amethyst asked.

"Yep,that's me!" SpongeBob said happily as he said. Steven had stars in his eyes.

"What kind of creature are you?"

"I good Steven, am a Sea Sponge..although I know i resemble a kitchen sponge." He siad giggling as he blushed a ittle bit.

Steven went over to Jimmy.

"I'm Steven Universe, Thats Garnet, Amethyst, and Pearl, and together we are The Crystal Gems." He said with him and the other gems making poses. Timmy, Danny, and Tak looked in confusion.

"C-Crystal Gems?" Danny asked.

"That's right Danny." PEarl said. "Together we four are the guardians of the Earth and of Humanity." She said with pride. Jimmy gestured the Gems over to the big computor in the center of the room.

"Steven, I bought you and theGems here for a reason...for you see, your world is connected to ours and every other world,this is called the Multiverse. All fo our worlds, including worlds not yet discovered are connected to eachother in a way."

"Today was doing experiments in my lab when my nemises, Professor Calamitous sent me a video detailing how he has once again united the Evil Syndicte to make another Doomsday Machine, and he told me that he was using a power source known as Corrupted Gems." The Gems were listening, Steven was listening conerningly, Amethyst had popcorn in her hand,Pearl had a worried look on her face,and Garnet was looking without a care. "I was researching these Gems and it has come from your world, that's how i know about you all. And that's why I boght you here, we have to get those gems back, and we also have to stop the Syndicate before they can launch their second Doomsday Machine."

Steven looked up at Garnet. "Oh please can we help Garnet, I know the Gems are something we should only care about, but I dont want Jimmy or his friends to fight this Syndicate alone." Pearl went over to Steven.

"Steven, I know you want to help, but we should just focus on the gems and then.." But Pearl didn't fisish because Amethyst interupted her.

"Oh Co'mon P, We have beeaten Monsters before, but we are talking about diffrent types of baddies here. And if these boys want our help to crush them into a pancake, then let's do it." She said pounding her fists. Timmy and Danny smiled at her bravery. Garnet looked at Steven.

"Let's do it." She said with a small smile. Steven got stars inhis eyes and hugged her. And then he went backover to Jimmy.

"Jimmy...have you or the others basically try talking woth these guys? Maby...try to change them? To be good?" Jimmy was about to say something but Tak went over to him.

"Steven, that might work for you in your world, but its diffrent in ours, once your a villain, your always a villain." SpongeBob nodded in saddness.

"Yea...I remember when I tried to reform my nemises Plankton...but it didn't work." SpongeBob said sadly, with Timmy patting his shoulder.

"Oh.." Steven said sadly. Garnet went over to Jimmy. "Jimmy,where should we start first for the gems?" Jimym went over to the computor.

"Well I wanted to go to my world, Retrovillfirst, but unfortunatly I cant figure out where Calamitous is. Last time he used a flea bot on my robot dog, but this time he coverd his tracks well...so I think, just like last time, we head to SpongeBob, Danny, Timmy, and Taks worlds first, so we can get back the gems that they took first." Spongebob raised his hand. "Yes SpongeBob?" Jimmy qasked weirdly.

"Ca we pleeaassee go to Bikini Botom first? Pleaassee?" He said making puppy dog eyes. Jimmy rolled his eyes, but rather aughed. "Ok SpongeBob, we can go to Bikini Bottom first."

"Yayyy" Spogenbob said haapily as Timmy rolled his eyes over SpongeBobs childness.

"Um..what is Bikini Bottom exacly Jimmy?" Pearl asked nervously.

"Bikini bottom is an underwater city, where SpongeBob comes from all Sea Creatures can talk." Steven awed at this but Pearl grabbed him.

"We cant bring Steven there, he will drown."

"Don't worry Pearl." Jimmy reached into his pocket and grabbed what looked like gum. "This is my Neutronic Air Gum. It can make anyone breath underwater. So Steven will be safe, I promise.

"Ha yea." Timmy said. "One of your inventions that actually work and don't go haywire." He and Amethyst laughed while Jimmy just gave them cold glares.

Danny,Timmy, SpogneBob, Tak, and Steven took each. He offred to the gems but they ddin't need it.

"Are you guys sure?" Garnet gave him a smallsmile.

"Don't worry Jimmy, we will be fine wthout it." Jimmy just nodded and he and the others started chewing. and they al reached the portal.

"Ok everybody..." Jimmy began. "It's time to save the multiverse again." Steven had his fist in theaire.

"Yea, let's do it guys!" He said as they all went to the portal and all jumped it. The adventrue has begun

Aaaand that wraps up the first chapter everybody, if your wondering why the gems dont take the gum, its because they don't have to breath, there was one episode where Garnet came out of the ocean after she looked for Jasper and Lapis. I'm sorry if this story is confusing since this is Nicktoons and Steven is a part of Cartoon Network, but i wanted to do this because i always dreamed of a crossover with the Crystal Gems and the Nicktoons Unite gang. So please read,review, follow, no flames, and i do not own any of these characters, they all belong to their own creators. Thanks :)