/Some people have done this kind of story before, but I want to do my own version of this story, as I adore Sonic Generations. Probably later I will do a Sonic Lost World story or something else/
Chatper 1: Chaos Time freaks (Green Hill zone)
-The Past-
A calm day at the Green Hill zone, where everything began. The green grass shined brightly as the sunflowers spinned around calmly. A great blue light runs around the zone. It's Sonic the hedgehog, or his classic version at least. The young Sonic dashes at great speed, going faster than sound with not much effort. Some Badniks made by Doctor Robotnik were in his way but they weren't a big deal for Sonic. The small hedgehog keeps running calmly, not having anything to do. 3 months ago, The Death Egg was destroyed once and Knuckles recovered his precious Master Emerald, returning Angel Island to the blue sky. Sonic begins to trip as a sudden quake was felt. The hedgehog looks around wondering what just happened, he just shurgged and keeps his way...till the beast appeared. Some giant black beast appeared out of a dark, purple warp and made a shockwave. Sonic turned to see the beast in amazement.
In other dimension, at Cloudsdale, the small Rainbow Dash was flying around at great speeds, trying to do her Sonic Rainboom once more. The bullies were laughing that she wasn't able to do that again, but the pegasus didn't care for them. She didn't have nothing to prove to them at all, just to prove herself. "Where is Fluttershy?!" She wondered with some anger on her face. Fluttershy and her had to train their flying skills, however the yellow pegasus didn't seem to appear anywhere. She just sighed as she remember Fluttershy is like that and she would need a miracle to change her. Suddenly, the same shockwave that alarmed Classic Sonic appeared with her, which send her to crash in front of the bullies. "Nicely done Rainbow Crash!" They laugh but that smile slowly fades to turn into a fear face, when they see the giant beast coming out. Rainbow Dash flies at it with all her courage and determination. "What are you?!"
-The present-
Parallely, there are 2 birthdays happening: Sonic and Rainbow Dash'. The hedgehog and the Pegasus went to their respective parties at their respective worlds and dimensions. "Hey guys what's going on? Got a party or something?" Both asked to their respective friends as they show up cakes: Sonic's cake had his face on it and Rainbow Dash' had Daring Do on it. "Oh you guys" Both said as they hang out with their friends calmly.
Sonic and Tails talked a bit about how Sonic is hard to surprise as the 2 tailed fox gives him a chilidog, which he adores. They have a happy party till a shockwave hit them all, sending everything, including the chilidog. "Sonic! what's that?!" Tails pointed as Sonic was shocked his chilidog got sent away. The beast comes out as Sonic looks at it with a lot of Anger. "You're gonna pay for this!" Sonic said and dashes at great speed to the dark enemy. With a velocity overgoing the 7000 miles per hour, Sonic tackles the monster, however this one doesn't seem too damaged and slaps him away. He slowly begins to turn into dust. "AAAAAAAAAA!" Sonic shouted of panic. He doesn't feel pain but he feels he'll die for that hit. Sonic's friends go to fight, however the beast opened 9 warps, which end absorbing them. Blaze was gonna get absorbed but Tails saves her. The 2 tailed fox ends absorbed by the warp easily. Tails, Amy, Knuckles, Cream, Rouge, Espio, Silver, Chip and Charmy got absorbed. Blaze goes for a final attack and gets hit, turning into dust as well.
Sonic and Blaze wake up in an empty, white town. It is scary to see a big town painted just of white. "Sonic!" Blaze said and hugged him. Sonic hugs back in exchange. She just wanted to hug her friends. After the hug, both explored the place and looked 2 statues in front of what it looks to be a tree house: One seems of an Unicorn and the other is Tails'. Sonic closed his punch in anger. "Sonic! We cannot let our feelings overtake us. This monster seems familiar and I feel some energy when opening this door" She said opening the door and enters. Sonic follows the princess of the Sol Dimension. The couple appears in what seems to be a colorful place: Green Hill zone. "Sonic...do you know this place?" Blaze asked curiously. Sonic mentioned that it is quite familiar to him. Sonic starts to run at great speed to explore, followed by Blaze with a similar speed. The cat looks amazed to the place as she imagines who is behind all this situation. Sonic and Blaze jump to slide over some rails. Big robotic fishes jump around to try to bit them. "...seems the game of the cat and the fish has changed" Blaze said and Sonic giggled for the ironic commentary. 2 shadows fly past them. "What the hell?!" Sonic said and runs to try to catch those 2 shadows. Blaze followed not shrugging or hesitating at all. The flying figures go extremely fast but Sonic and Blaze get them. "Hey leave us!" Sonic gets clawed by the other figure. Blaze burns it for attacking his friend. "AAAAAAAA!" She shouted in pain. "GILDA!" The pegasus said as the 4 arrive to a no return point.
"Who are you? what are you doing here? wait. I am the one that asks the questions not you!" Sonic and Rainbow Dash said to each other syncronized, like if they talk with a mirror. "Enough of this" Blaze said. "You'll regret that cat" Gilda said groaning in pain. "What do you think you're doing?! We are the ones that'll stop that freak!" Rainbow Dash said angrily to the hedgehog and cat. "Hey better be careful with your words. If you want I can kick your ass right here and now!" Sonic said. "Sonic! It's enough. We have a common enemy. That beast attacked them, we better work with them to stop it." Blaze said. "I...will admit you have a cool name, Sonic" Gilda said. "Not as cool as mine" She said. Eventually they present, return to the town and look around again. The tree begins to recover the color once more. "Twilight!" Rainbow Dash said excited as this one, along with Tails, recover their colors.
To be continued...