We start in The heart of the madness; Eggbotnik Industries. Dr. Robotnik is charismatic, and happy to share his ideas and sales pitches. However, this is only the facade of what he uses to get where he is now. He has beaten everyone in every market. he is very interested in pushing the boundaries of nature to its sheer limits. under the happy-go-lucky additude, He is nothing but a madman. His recent product: Eggbotnik Speed Trainers are advertised to withstand the highest of speeds, knowing that nobody is fast enough to see if that's even true. That's when we see The Lab where Sonic, brown in color just like he was back then, on a miniature treadmill, with a little feeder for water. We can see that there are also other hedgehogs here, all wearing the Eggbotnik Speed Trainers. We then see that A vial of blue serum is infected into Sonic. his quills get a little more Blue, and gets a Speed Boost. the Serum is injected again, and this time, he is all the way blue, and he breaks the machine. He has no idea what he has done, but one this is already clear: he has to get outta there. This is where a tutorial initiates, and we learn that we can use Ziplines as a means of travel. he escapes, and a Eggbotnik Flag is ripped off of the building. Sonic Takes a peice, and wears is as a reminder of his true goal; Stop this madness. After traveling from Deforested Valleys, Pollouted beaches, OverMined mountains and a Bustling City, we finally make It back to the Building. its A normal stage until Sonic's Shoes get mixed up in the factory, leaving him with only socks, and switching it to a stealth level. after that, you finally make it to the head office of the facility, with Robotnik already waiting for him. he has another Pair of Trainers for him, and as soon as we get them, Metal Sonic Fights you. this isn't the first time you fight him, as he watches Sonic's whole journey from afar, Attacking when prompted by The Doctor. This fight you are ment to lose, and you are put under the blaster of The Metallic Brute. But, he remembers the serene places Sonic Raced in. how beautiful they were. Metal Sonic Bacically has a Gamma Story arch, where he cant bring himself to defeat him. Robotnik has had enough. he has surpassed his breaking point. he pushes a button on his desk that unleashes a swarm of copies that slices up Metal, leaving him as scrap. The other lifeless Copies Start chasing the blue blur as the final Showdown. racing through all the places we were just in, the doctor is desperate to bring the hedgehog with him in a Blaze of Glory. After running and dodging all the metallic madness, one last blow to the doc's Eggmobile, and he goes down in a huge explosion. afterwards, Sonic Knows his job is done, tossing away the dead Metal Sonics that immediately disengaged after Robotnik went down. After the event of the game, Sonic Is praised for his heroics. Animals in the lab are freed, and then we meet Tails, another Animal that has been taken away from his family. He was also being tested on, except for animal intelligence. he makes Sonic Shoes that are eco-friendly, and have his iconic Red and white then his Eggbotnik trainers, that were Red and Black.