Silver's Future, 2223, day
Somewhere in the future, Silver is seen flying around to check out everything is back to normal after Bruce Banner snapped half the population back to reality after reversing Thanos' snap.
Silver: (after landing on the ground) Thank you, Sonic, SpongeBob, Kirby, turtles, and Avengers! For everything!
Random Civilian: You saved us all from devastation from the Mad Titan, Thanos from the past.
Another Civilian: Hooray for Silver!
All the civilians in the futuristic city are celebrating after half of the population came back into existence.
Silver: Thank you all for the glory and respect I have for doing the right thing in the past to help Sonic and the other heroes for protecting the universe from evil, which nearly included Dr. Eggman from threatening the world.
Elsewhere, in Malibu, CA
Somewhere right where Tony Stark's mansion once stood which was left nothing but trees. However, a mysterious figure appears out of nowhere until the figures turn out to be Eggman Nega, whom Silver and Blaze were sabotaging his evil schemes like Dr. Eggman, who fought Sonic numerous times to demolish his Eggmanland projects to save the world.
Eggman Nega: Heh, heh, heh! So this is where the legendary Tony Stark's mansion was built on this site until the Mandarin attacked and destroyed it.
Another figure appears beside him turns out to be Captain Whisker, who wanted to obtain the Jeweled Scepter until he was defeated by Sonic and his friends.
Captain Whisker: If that lad Stark had all of his belongings destroyed before escaping the mansion from these air pirates that were trying to kill him in the first place.
And also along with them were Johnny, Mini, and Mum.
Johnny: This Stark guy is definitely like his father, who imagines his own Stark Expo for his son to make his dreams come true.
Mini: Yeah, until a man named Ivan Vanko, also known as the Whiplash wanted to defeat him and run him out of business.
Mum: And Anton Vanko is his father, whom Howard actually disgraced him for copying his own Arc Reactor.
Eggman Nega: Indeed! His son actually fought him by using his own weapon against himself.
Johnny: Along with his military buddy, Colonel James Rhodes, who goes by the name War Machine.
Mum: Talk about some family history these two have!
Captain Whisker: Precisely! Both these men go way back until Howard fired him for stealing his work.
Eggman Nega: If we have major world domination to take down our enemies, especially Sonic, Silver, Blaze, and their wretched pals from interfering our plans.
As they turn around to leave, a mysterious jackal wearing a mask with a gem on his chest, who turns out to be Infinite, the holder of the Phantom Ruby.
Infinite: How about we take matters in our own hands?!
Present Day
In Foot Headquarters, the leader of the Foot Clan, Oroku Saki, better known as the Shredder, along with his daughter, Karai, joined by the duo are Bebop and Rocksteady are planning to take over New York and eradicate the turtles and Splinter once and for all.
Shredder: Foot Ninjas! This time we will dominate the city and annihilate the turtles once and for all!
Foot Ninjas: YEAH!
Sonic will return
The turtles will return