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Sora has awaken from his long year of sleep, and he, Donald, and Goofy are now off on another adventure. But the worlds they will explore will be much stranger and far more difficult then their previous adventure. One of the new worlds they enter has creatures of the animal type, one of them is none other then Sonic the Hedgehog. Sora and the others have arrived just in time; Eggman, unfortunetly, has learned of the heartless, and is now using them to take over the world. Not only that, but he has also found out of others worlds from none other then Maleficent herself! Now Eggman plans on not just taking over the Station square and his original world, but ALL of the worlds! Sonic has never fought creatures like the Heartless before, and needs help. Luckily, Sora and his friends have arrived. After seeing how much trouble the heartless are, when Sora and the other decide to leave, Sonic will decide to go with them and help save all of the other worlds from not only Heartless, but the nobodies as well. Will they survive this new adventure with their new friends and foes? or will the Darkness be too much?

~Story Thus Far~

Okay, I'll make the biginning short.(I might add more detal of the beginning later)

Heather crashed in Angel Island. She fell out of a gummi ship. She walked the Island and found the Master Emerald's alter. There, Tails flew in the X-Tornado. There, Knuckles and Tails met the human female and they talked and so on.
Meanwhile, Sora had crashed his own gummi ship on the island and met a hedgehog named Sparkx. They talked and ended up at the Master Emeralds alter where Heather and Sora reconized eachother(old friends). Then Tails flew them to Station Square at Chris' house and Sora and Heather explained what the heartless were. Then they went looking for Donald and Goofy.
After a while they found Donald and goofy in the middle of a crowed. The friends were happy to see eachother. (then the guy who played Sonic for a while) Sonic came in and met everyone. Then was told about the heartless. He was being a little over confident thinking he could handle them. Then, speaking of heartless. A HUGE amount appeared and there was a huge fight. They found out it was Pete who made the heartless appear. he was looking for Eggman so he could control them too. After he left Shadow appeared and had been tricked by the Orginization, making him think he did not have a heart(proven wrong). ANother hedgehog appeared, named Rage and he was there to fight Sora. Well, Heather and Sonic held him off at first, but both got hurt. Then Sora fused with Donald and Goofy and they fought Rage. Sora's left arm now almost broken. Sonic and Heather went to look around the city and they fought heartless(well, heather ran off and he went to find her). ANyay, the others could not help Sora since he was stuck fighting rage behind a barrier.
After the fight they all went back to Chris' house where they found it taken over by dusk. Chris was in his room, while the duck were looking for the Chaos Emeralds and Shadow was looking for his power rings. Once everyone else arrived, they ran into the house and began to fight.
Heather and Sparkx managed to get into Chris' room and stop Shadow before he could get anything. Heather and Shadow got into a fight, but Chris stopped them and he and Shadow fell unconscious. Xemnas had watched the fight and dissapeared, making a portal appear to take Shadow with but he got Chris and Heather too.
Sora and the others back at Station square headed for Angel Island to fix the gummi ship and attach it to the X-tornado so they could follow to another world.

Heather, Chris, and the unconscious Shadow appeared in Agrabah. They met up with Iago and fought a bunch of heartless and Aladdin appeared to help. They went to the palace where Shadow woke up and talked to CHris, while Heather, Aladdin, and Kazuto saw the X-tonado and the gummi ship come for a landing outside of Agrabah. Everyone was there: Sora, Donald, Goofy, SParkx, Aqua, Sonic, and Tails.
Heather explained that she saw a strange but familure black lamp, that it was Jafar. They all went back to the palace, but then Heather followed after Kazuto to check out this dark room.
They both found a secret way and it led them to the Cave of wonders.
Sora and Sparkx soon, after a while went to look for them while the others stayed at the palace. Shadow and Chris had come back.After another while of waiting, everyone else went to look for them and everyone is now at the cave of wonders, where they are in the middle of a battle of Shadow vs.... Shadow? A Shadow look-a-like appeared and attacked. heather jumped in to help the hedgehog and now the others have begun to help. The battle was short, and the look-a-like ran off, but trouble was not far behind when Siax threatened the gang. Mostly Heather. Siax tryed to get Demyx back to the orginization's castle, and Heather was in no possition to fight Shadow jumped in and attacked Siax. Thus, another battle quickly begun. As the fight continued on, Siax directed his attacks at Heather, and tryed to kill her. Luckily, Donald's magic helped protect her. Siax was then struck by Shadow's chaos blast and he could not move. Heather rejoined her friends and they all left and headed back to the palace.
As everyone entered the entrance hall, they could not help but plop on the floor. Aladdin and Jasmine told them that rooms were ready for the team at anytime. So, they decided to double bunk.

Meanwhile, at Olympus Coliseum, others were arriving one by one at that world. Dark rage had arrived after being summoned bu Hades to take out Hercules. Demyx arrived at the same time to set out on his own since he did not want to be a villian anymore. And Siax was not far behind, but he decided to wear a descize so no one would reconize him in the on coming tornament. A few minutes later, Knuckles had arrived at the Coliseum after chasing a heartless through station square. All but the Echidna headed into the underworld, looking for something to do before the tornament could start.

Back in Agrabah, everyone was now alseep except for Heather and Sora. The two teens had alot on their mind, so, but coinsedence(sp?) they both began to walk through the halls until they ran into eachother. Heather saw that Sora looked kind of upset so they went to an empty room and on a balcony to talk. Sora explained why he was a little upset and all but talking to his old friend helped him. Heather even told Sora somethings that were on her mind. What relieved the girl the most was that Sora's arm was healed. They conversation continued as they started to tell about the past year from being apart.
Soon, their conversation ended and they went back to their rooms to sleep, and all of Agrabah fell quiet.

Meanwhile, back at Station Square, it was heck. Eggman looked like he had won the fight and finally taken over the who city world! But without Sonic there Eggman did not find the vitory complete. As he continued to complain and glote, a new face appeared in that world. It was Riku! The silver haired teen had come from the World that Never was and began to fight heartless left and right after entering Sation Square. No big deal to hi of coarse. Until Eggman made his appearance and sent his strongest heartless after the boy. Riku found himself outnumbered and was getting torn to shreds. He decided to retreat and he dissapeared through a portal and reapeared in Agrabah, where it had become morining.
Sora had been awake during the time and went for a small walk outside. When he did, he found his childhood friend on the ground. Sora helped Riku to the door, where Heather came outside to help. Once inside, Sora and Heather used their cure magic while Aqua used her water powers to heal Riku's wounds slightly. Riku woke up, glad to see Sora and vise-versa.
Riku was slowly regaining his strength as he became conscious once again. Heather and Sora helped the older teen to an empty room; along the way, Riku explained how he got to Agrabah and why he was hurt. Riku told the two teens that he had gone to a city world that was infested with heartless, and the leader was a strange, fat egg-shaped man who accused Riku of being sent by Sonic. Heather got worried right there, and so did Sora. After they entered an empty bedroom, Heather ran out to find Sonic and explain the situation.
Sonic was shocked as well to hear that Eggman had taken over his world. The blue hedgehog ran off to find Tails so they could leave. Heather did the same, but to tell Sora. Sora, of caorse, was against his friend going without him, but Heather gave him good reasons yet again. He agreed as long as Sparkx went with her.
After a few minutes--or seconds-- Sonic had returned with Tails at the X-Tornado and the group set off to Station Square.

Meanwhile, at Olympus Coliseum, Demyx, Dark Rage, and Teh had gotten themselves into a fight with the gaint three headed dog himself, Cerberus! Knuckles had still recently appeared at the Coliseum, only to hear a small battle going on in the arena with a very muscular man and a monster. The red echidna went back out ot the front of the building, not wanting to just sit and wait.

At Station Square, things only got wrose and worse. Upon arrivel, the group was attacked by almost half an army of heartless. Sonic, Sparkx, and Heather jumped down from the tonado so the plane would not be attacked, and fought very hard. Using Sparkx electric skills, Heather used a thundara spell on the hedgehog, making him like an electric cannon to blast away the remaining heartless. The battle was soon over, but the trio got serious injuries. Sonic had been cut almost deeply on his back, while Sparkx was cut on his side with loss of energy; and Heather wasn't damaged too bad, she only lost most of her strength from using so much magic. The tornado was then on the ground, Tails sayig they should go back to Agrabah for more help. But Heather decided to stay and keep an eye on things, making Sparkx argue with the girl. The fight forced Heather to walk off, leaving the group behind. But Sonic followed the teen to make sure she would not be hurt. It was lucky he did. Once Heather was alone, until she noticed Sonic ontop of the building, Siax appeared running into Heather once again. AFter a small 'chat' they had, another large heartless appeared, fighting Heather until she was blown into one of the unstable buildings. 'Sia' appeared to fight the heartless as well, and Sonic joined in, running into the building to help the girl, getting her out of the building as it collapsed. Sai dissapeared, making Siax appear once again for a short while, then vanishing again, only to have his somebody appear! The real Sia, who is another keybearer. Trouble was not far as Siax appeared again, dressed as Sai. To get her and Sonic away from the battle, the teen blew the two Sia's away, giving her and Sonic a chance to run... into a dead end allyway. Sonic carried Heather up the wall and onto the top of the building so they could look for Tails and Sparkx.
Tails and Sparkx were on the other side of the city by then. With the Tornado in it's walker form, they only traveled the street, going to the Mystic ruins and Tails Workshop. Sparkx, still very worn out from the fight, was relaxing on the wing of the plane.
Heather, usuing her Thundara spell again, shot a lightning bolt from the sky so they could find the others. Sparkx was able to obsorb the lightning, giving him some of his strength back. Sonic ran over the buildings, making his way, with Heather, towards the direction that the lightning had gone. After a few minutes, Sparkx and Tails came into view.