Three years ago...

Shadow: I don't know how much longer I can stay in my super form!

Amy: If you two don't hurry, the whole world will be gone!
Knuckles: Give it your best shot and take him down!
Tails: Everyone is counting on you! You have to win!
Rouge: I know you can do this, now let him have it!
Eggman: You have to win Sonic!

In the middle of space, a gold hedgehog and a silver hedgehog were fighting the most powerful lifeform in the galaxy. The Biolizard. And if they didn't defeat him, then he would destroy the Earth, and possibly the rest of the galaxy with it. The gold hedgehog was Sonic, and the silver hedgehog was Shadow. They were in their super forms, thanks to the power of the chaos emeralds.

Sonic: There it is Shadow, his weak spot!
Shadow: Right! CHAOS SPEAR!

Holding out his hand, Shadow created a ball of blue energy, and threw it at the Biolizard. It split into ten spears of blue energy, which all flew into the Biolizard's face. It roared, showing that it was weak.

Sonic: Now Shadow!

Sonic and Shadow created a huge orb of energy and threw it at the Biolizard, which had fused with the Space Station ARK.

Sonic & Shadow: CHAOS CONTROL!

The energy covered the entire space station and sent it to a spot safe from the Earth. However, Shadow didn't have enough energy, and he fell towards the Earth.

Episode 1: Cat and Fox.

Ever since Sonic and Shadow succesfully defeated the Biolizard and saved the Earth, people have been living a life of peace. Dr. Eggman quit his evil ways, and decided to live on the Space Station ARK. Tails has been working on the chaos emeralds, trying to learn everything he can about them. Knuckles has been guarding the Master Emerald, while Rouge quit working for the president and has decided to live a normal life. Amy has moved in with Cream and her mom, and Big is still living in the Mystic Ruins. However, the one thing that everyone wants to know: Where is Sonic? About three months after the ARK incident, he vanished. No one has heard from him since. Many people are spreading rumors that he died. Others are saying that he ran off with a lover. But the true reason is about to be revealed...

Knuckles: Another day, another bore.

Even though Knuckles liked this life of peace, he had been getting restless.

Knuckles: Maybe telling Rouge to stay off the island wasn't such a good idea...

Knuckles looked up the sky, his thoughts trailing off to the beautiful batgirl. Three years ago they started off as enemies, but they slowly developed a friendly relationship. Because of Rouge, Knuckles often found himself thinking about her. Wondering if she liked him more than a friend. Then again, he hadn't seen her in three years, so she probably forgot about him.

Knuckles: Maybe I should fly down to Station Square and see what she's up to.

Just then, the island started to vibrate. The vibrations then turned into a massive earthquake.

Knuckles: CRAP! Angel Island is falling, again!

The island leaned to one side, then the other. Then, it started to fall at an alarmingly fast pace.

Knuckles: But wait. If the Master Emerald is solid and in it's place, then how could the island be falling?

Knuckles slammed his fists into the ground, bracing himself for the impact.

Meanwhile, Amy Rose was laying on a beach blanket in the Mystic Ruins. Since Sonic wasn't comming back anytime soon, she decided to catch up on her tan. Next to her was Cream the Rabbit, and sitting on the edge of a cliff was Big the Cat, who was fishing.

Amy: This is great! When Sonic gets back, he'll have to notice me!
Cream: I have to say, this is pretty fun!

Suddenly, a big shadow appeared over Amy and Cream.

Amy: Hey Big, could you not get in my light?
Big: Uh... it isn't me.
Amy: What?
Cream: Amy! Look out!

Amy took off her sunglasses and saw that Angel Island was going to crash into the ocean.

Amy: EVERYONE! RUN AWAY!

Big got up, grabbed Amy and Cream, and ran as fast as he could. The island crashed into the ocean, causing a giant wave to fly up and slam into the three. Amy slammed into a rock, Big crashed into a tree, knocking it over, and Cream flew up into the sky. When the wave subsided, Knuckles walked off the island.

Knuckles: I never get tired of that.
Big: Hey look! It's Knuckles!
Cream: Hi Knuckles, how are you?
Knuckles: A little bored, but I'm okay. Amy: Knuckles! You ruined my tanning session!

Amy walked over to Knuckles, a pair of broken sunglasses in one hand and a hammer in the other.

Knuckles: Uh... sorry? Amy: Sorry! You slam me into a rock and ruin my tan and all you can say is sorry!
Knuckles: Yep.

Amy just stood there. She couldn't come up with an arguement, and could tell that Knuckles didn't really care. So, she tossed her hammer and glasses into the air and huffed off. The hammer came back down, conking Knuckles in the head.

Amy: Yes!

Back at Tails' workshop...

Tails: Finally! This is my greatest discovery yet!

Tails had been conducting tests on the chaos emeralds, trying to figure out everything about them. He knew most of the emerald's properties, but he wanted to know them inside and out. This time, his hard work had payed off.

Tails: According to my findings, the chaos emeralds are each tied to a different power. Red is fire, green is forest, orange is wind, purple is love, blue is water, aqua is light, and silver is darkness. Also according to my findings, the emeralds can create life. But that could be an error.

Just as Tails finished that up, there was a knock at his door. He put the purple, aqua, and silver emeralds away, then walked over to the door. When he opened it up, he saw a female cat standing in the doorway. She had orange fur, blonde hair, aqua eyes, and was wearing a long-sleeve shirt and jeans.

Tails: Uh... Cat: Hi there. My name is Miyu, what's yours?
Tails: Miles. No wait! It's Tails!
Miyu: You have two names?
Tails: My real name is Miles, but everyone calls me Tails.
Miyu: Because you have two tails, right? Tails: Yeah.

Miyu giggled, and Tails blushed a bit.

Miyu: By the way, i'm sixteen. How old are you?
Tails: Thirteen.
Miyu: And you live by yourself? That's pretty cool. Tails: Can I help you?
Miyu: Um, I was wondering if I could stay here.
Tails: Why?
Miyu: Because... I can't remember anything.
Tails: What...? Miyu: I just woke up in the Mystic Ruins, and I managed to find my way to your house. The only thing I can remember is my name, and I don't want to be out there alone.

Tails could tell that she wasn't making this up. Plus, she was pretty cute.

Tails: You can stay as long as you want.
Miyu: Really! Thanks!

Miyu walked into the house, and Tails closed the door. But, standing on the traintracks, watching Tails' house, was a female fox. She had yellow fur, brown hair, green eyes, and was wearing a white shirt, leather jacket, black jeans, and she had a handgun on her hip.

Fox: It has begun. Hopefully I'm not too late.

She jumped off the tracks and vanished.