Part 1:
After the event of Sonic Frontiers. Sonic and his friends had decided to leave the islands after the defeat of The End thanks to Super Sonic and the sacrifice of Sage. Dr. Eggman feeling depressed with the loss of his daughter Sage and unable to back her memories up in this timeline had disappeared without a trace. Mobius was at peace once again. It wouldn't be long until another adventure comes forth. During that time of peace, Dr. Eggman was working on a new ship/base for one of his plans to of course take over the world and expand his glorious Eggman empire so everyone could worship his mighty Pingas. This new creation was known as the Eggvent Horizon with it he would be able to travel within the universe at warp speed thanks to his technology in black hole manipulation. He eventually tests out the ship after his hard work the technology is a success and manages to warp towards Planet Wisp within less of a few seconds. Eggman celebrated his success with some ice cream being served to him by cube bot or orb bot serving him. Eggman decides to go an rest his genius mind with a nice bed rest thinking about his next plans against that pesky hedgehog. Then Eggman begins to hear noises throughout the ship and decides to check out the source and got out of bed. He walked to the control room and he saw a familiar face to his shock. It was Sage sitting at his commander's chair humming to herself. Eggman responded, "Sage…. My daughter, why are you here I thought you had died?" The being that is similar to sage in appearance turns around to face her father and then opens her eyes to reveal that she is eyeless and smiles. "Father it's been a long time, I've been waiting to show such wonderful things to you," Sage said in a creepy tone as she beings to move towards Eggman and then gouged his eyes out with Eggman screaming. It then cuts to Eggman clawing out his eyes screaming rage, and sorrow sounds as if it is a primal inhuman roar echoes throughout the coldness of the spaceship.
Part 2:
One year has passed since Eggman's creation of the "Eggvent Horizon" and the disastrous launch of the spaceship ship Sonic and several of his friends were out in their own ship "Tornado X" built by Tails exploring the galaxy and overvibing with each other. Sonic was eating his chill dogs, Tails was piloting the ship, Knuckles and Rouge with having a fun time with one another, Amy was looking out the window amazed by the stars in space, and Shadow was just being his good old edge lord self. "Hey Sonic you might want to take a look at this." Tails said while pointing at the main screen showing a mysterious ship near by planet Wip with a familiar logo on the ship's side. "Wait a second is that Eggman's ship, ah great he probably up the something again," Sonic said in an annoyed tone. "Sonic, something seems off about all this, I don't know why." Knuckles comments on the situation. "Regardless, Tails just fire some guns and Macross missiles at the fatass," Shadow ordered. "No Shadow we are doing that plus we are not going to piss off the fanbase again with your edgy bullshit also we are not murdering Eggman." Tails replied back. "You guys suck," Shadow said in annoyance. "Come on Shadow, plus what if there is some cool shit for me to steal I mean bring back to GUN HQ," Rouge suggested. " Well we can't just stay sitting out here, and besides got to keep the story moving forward, and hey maybe we should attack Eggman first before he does something," Amy explained. "Sure why, come tails lets set sail and dock aboard Eggman's ship." Sonic said to his friend. "Righty then." Tails said. And Tails managed to dock the ship by Eggman's ship connecting the two. Everyone in Sonic's group walks out of their ship into Eggvent Horizon, once they enter they notice how cold and eerie the atmosphere is and all of the destroyed Eggbots lying face down as if another enemy had been there. " Yeah, this is totally a nice welcome from Eggman isn't it?" Amy said in a sarcastic tone. "Looks like someone must've taken care of Eggman for us." Tails guessed. " Come on everyone let's split up into 3 groups and find Eggman." said Sonic.
Part 3:
After arriving aboard the Eggvent Horizon Sonic and his friends split into 3 groups of two Sonic with his homie Tails, Amy with knuckles, Shadow with Boobs I mean Rouge the Rat. Knuckles and Amy explored the other parts of the ship until they reached the Gravity Drive Room with was a huge circular device surrounded by water with rings around a glowing light spinning around it powering the ship within the dark room. "The power source to the ship is still functional, huh this is odd. Come on Amy let's go and see the others." Knuckles commented before heading out. "Yeah, this place is really getting to me the more we stay. Coming Knux…' Amy responded before being interrupted by a familiar voice. "Amy are you there?" the called the voice. Amy turns around and sees who appears to be Cream and the rabbit with Cheese. Amy then goes after Cream with the room who then climbs up the ladder and eventually reaches the 3 story of the room and finds Cream waving on the other side for Amy. Amy then runs towards her but a trap door opens and she falls down 3 stories screaming and then ends up crashing back down to the ground breaking her neck and bones choking on her own blood from the internal injuries making the water around the device turn red like blood. Knuckles turns back after hearing the crashing sound and noticing that Amy is not behind him. Knuckles heads back to the Gravity Drive room and notices her dead body on the floor in horror. "AMY!" Knuckles screamed in horror as he ran up to her dead body crying from her loss. Then out of the surrounding liquid with the room, something was rising out of the bloody water with flames surrounding it's figure and burned ashen skin and glowing red eyes staring at Knuckles. "Blaze?" Knuckles said with tears still in his eyes. "You abandoned me….." Blaze said before disappearing in front of a confused Knuckles.