Credit to DrEggnik and nervouswreck96 for the Sonic and Judy vectors used in the cover.

What was going on?

About a month ago, a scientist named Mons had created a device that would open portals from Sonic's universe to others. Mons's machine had been drawing on the energy of other universes to open portals, which had involuntarily been pulling the inhabitants of these universes to Sonic's world. Sonic had seen some odd creatures on his world since the experiment, and knew they all probably wanted to go home. He'd also been breezing through places he'd never seen before on his daily runs. These places were definitely not from Sonic's world. The combination of universes must be causing locations from those universes to show up here. Sonic decided he would explore more of these locations after he visited Tails to pick up his new invention, The Cross-Universe Detector. It would pick up people, places and things from other universes. That way, Sonic would always know when something was out of the ordinary.

Tails was busy in his workshop when a knock at the door disturbed his work. "Hello?" he called, walking towards the door. He looked through the peephole on his front door and saw Sonic waving at him. "Yo, Tails! This door isn't gonna open itself!" Sonic said teasingly to Tails. "Hold on, Sonic!" Tails said as he opened the door. Sonic stepped in and nearly hit his head on the low ceiling. "Ow! You can build mech suits but you can't raise your ceiling?" Tails chuckled. "With all my inventions as of late, the ceiling hasn't exactly been in the budget." Sonic sighed and shook his head. "Anyway, is the CU Detector ready yet?" Tails nodded excitedly "Yep! I upgraded it with lots of extra features, since you've been away and haven't found the time to pick it up." Sonic grinned. "Well, I have been doing a lot of exploring. I really want to take the CUD with me to this beautiful city called Zootopia. I've never seen it before, so my suspicion is, it's not from this world. That city probably warped here from one of

those portals Mons opened." Tails tipped his head slightly in agreement and said "I don't like that Mons guy. His actions were unauthorized, and he's torn apart parts of the world so that these new locations have a- well, location! If he wanted to do something for the people he should have followed his brother's example and joined the Freedom Fighters!" Mons's brother, Joe the Pug, had been subjugated to a terrible experiment years ago with a serum that gave him super-strength, heightened speed and agility, and a extremely strong immune system, making him extremely hard to be put out of action. He had joined the Freedom Fighters just a week ago, and was already a respected member. Sonic sighed and turned to Tails. "Everyone with good intentions in their heart just wants to help, to make the world a better, safer place. Mons opened up the world to so much more beauty and opportunity. So what if he destroyed some old landscaping? Every action has a consequence, Tails. Some of them are worth it."

"And some aren't." Tails retorted as Sonic grabbed the CUD and walked out the door, ducking to avoid the low ceiling. Sonic turned on the mini-GPS he wore on his wrist and typed in 'Zootopia'. The GPS found a match, and Sonic sped off towards the location.

Officer Judy Hopps was having a bad day. The entire city of Zootopia, including many of it's outskirts such as Bunnyburrow, Judy's hometown where her parents and many relatives lived, had warped into another universe, on another world. To many of Zootopia's inhabitants, it wasn't that big of a deal, but Judy still knew it wasn't really her home, even if her home was still there. She wanted to explore the world- her world. She decided then and now whoever sent her here was going to send her back. Her close friend Nick Wilde agreed with her. The Zootopia Police Department, or ZPD, wasn't very concerned with the matter at the moment because they were a police force assigned to Zootopia alone as it was. But even they were aware of a rising issue. Animals from all over the world had come to visit Zootopia. It was one of their world's great staples. And now it was just-gone. Something was coming. There had been strange tremors in whatever universe they were in now, and they were worried their world might be experiencing the same. Zootopia's inhabitants didn't know much. All they knew was something about a guy named Mons and a blue hedgehog... maybe he was Mons?

At that moment, a blue blur came racing through Zootopia. Judy gasped. If she could catch him, she could get answers.

Sonic ran through Zootopia, free as the wind. "Yo Tails, this place is G-REAT! I haven't bothered to break out the CUD yet- Tails? you there?" Tails's voice came over the comm-link on Sonic's wrist. "I'm here, Sonic, but someone is trying to jam the communications! Sonic, do you copy-" Sonic's signal cut out, and he came to a halt. He felt eyes on him and turned around. "Hello?" He turned around again and came face to face with Judy Hopps. "Well, aren't you the cutest little bunny-" Sonic began. "Don't. Call. Me. Cute." Judy snapped at him. "As it is, you're wanted for questioning by the ZPD." A puzzled look crossed Sonic's face. "Me? What did I do?" Judy sighed impatiently. "What did you do? You tore my world apart, Mons!" Sonic laughed and facepalmed at the same time. "Mons? The scientist? I'm not him! I'm Sonic the Hedgehog, first-class hero, chili-dog eating champion and all-around good guy!" Sonic said pridefully. Judy's face turned red as a beet. "Oh! I'm so sorry! Wait- hero? You said that, right? Does that mean you can help me?" Sonic sighed. "Look, lady, As much as I'd love to stop for everyone in need, the truth is- I can't. There's just not enough of my awesomeness to go around! So, why don't you ask you ZPD friends to help you out? Zootopia Police Department, right? They can help you! Why bother me?" Judy gave Sonic an exasperated look. "They're not concerned about it. Their job is to protect Zootopia, and that's still here, so- they don't care. And, as far as I can tell, you were just taking a leisure walk- run, through the city." Sonic sighed again. "Ok, ok you got me there. Look, the truth is, I don't think I can get you back to wherever you came from, and I didn't want to let you down. I mean, how could I hurt someone as cute as you?"

"DON'T CALL ME CUTE!"

Rival and friend of Sonic, Shadow the Hedgehog, stood on the edge of a cliff where Sonic had asked to meet him yesterday to talk about 'the portals'. He noticed that for someone with such heightened speed, Sonic was quite late. Shadow turned around to leave just as he saw a blue blur racing across the hills. Sonic saw Shadow and ran towards him. "Took you long enough." Shadow said coldly. He expected a retort, but was surprised to see Sonic simply nodding in agreement. Shadow knew something had happened. "What happened while you were out there?" Sonic caught his breath and said "Oh, just another person who wants me to send them back home. I don't think there's much I can do for her." Shadow looked up to the sky and said "You don't sound convinced. What happened over there that's made you so determined?" Sonic was surprised by Shadow's question and turned his head away. "Well, I think I can do it. I'll need help, mostly from Tails, but it should be possible. There's just one problem with sending her back home." Shadow looked inquisitively at Sonic. "And what is that?" Sonic blushed and said:

"I don't know why, but I think I love her."

Shadow paused a moment and said "Well, that must be tough. Knowing that she'll never feel that way towards you. She just wants you to send her home, then she'll never think about you again. Not like that." Sonic sighed. "When the whole world comes crashing down, that's when you have to be strongest. That's when you have to stand up and show the world you won't be deterred." Shadow looked at Sonic in surprise. "You really are determined, aren't you?"

Sonic grinned. "You know I am."

Hey everyone!

Chimi from the future here updating this chapter to fix some typos and add the vector credit to the start of this chapter.

Here's what past me wrote at the end of this chapter:

So there you go! After going back and forth on where I should take this story, I've finally written a chapter I'm really happy with! I hope you all enjoy the beginning of Sonic's cross-universe adventure! I plan to take this story further than I did my previous story, that was just a short story about one of my sister's favorite characters. Anyways, have a good day, and I'll see ya' in the next chapter!

-Chimi