A blue hedgehog with supersonic speed must rescue animals from being turned into robots by a mad scientist.

Doctor Robotnik is an evil and mad scientist who only had one destiny, taking over the whole world and to do this he needs to collect all six chaos emeralds which are located on the South Island. So Robotnik goes to the South Island and turns all animals there into robot slaves. Who will stop this madness! Well, sonic the hedgehog of course. sonic is a blue hedgehog that can run at the speed of sound. When sonic hears what Robotnik is doing he needs to stop him but Robotnik turned all the animals into robots. So sonic needs to free all his friends to collect all the chaos emeralds before Robotnik does and defeat him and bring peace into a South Island again.

Sonic is a blue hedgehog who has the unusual ability (for a hedgehog) to run fast. When the evil Dr. Robotnik begins to assimilate all the creatures on the planet into robots, Sonic must use his ability to stop Robotnik. Sonic must battle through 6 zones (3 acts each) and then face off against Robotnik in one final zone.—Anonymous

Dr. Eggman, a brilliant scientist, dreams of world domination and intends to accomplish this by using the six Chaos Emeralds, currently held on South Island, and which give legendary power. Eggman builds a base on the island and begins turning innocent animals into robot slaves in order to achieve his goals. Sonic, a super-fast blue hedgehog, hears of these developments and goes to save his friends. Although South Island is now infested with Eggman’s mechanical devices, Sonic has one advantage: Eggman doesn’t realize that the Chaos Emeralds are not on the island itself, but in a secret zone caused by its movement. Sonic sets out to acquire the gems before Eggman and confront him in order to restore peace to South Island.—thomaswake16

Dr. Robotnik, a brilliant scientist, dreams of world domination and intends to accomplish this by using the six Chaos Emeralds, currently held on South Island, and which give legendary power. Dr. Robotnik builds a base on the island and begins turning innocent animals into robot slaves in order to achieve his goals. Sonic, a super-fast blue hedgehog, hears of these developments and goes to save his friends. Although South Island is now infested with Dr. Robotnik’s mechanical devices, Sonic has one advantage: Dr. Robotnik doesn’t realise that the Chaos Emeralds are not on the island itself, but in a secret zone caused by its movement. Sonic sets out to acquire the gems before Dr. Robotnik and confront him in order to restore peace to South Island.—thomaswake16 (edited by NotWar)

The titular character, Sonic, begins his journey in Green Hill Zone and travels on foot from zone to zone, on South Island, following a canonically-geographic pathway to Scrap Brain Zone which abuts the core of the principal villain’s lair. Each zone corresponds to a chapter in this story devoid of dialog, narration, exposition or caption. All the way throughout this journey, Sonic destroys robotic hostiles sent or placed by the principal villain (Doctor Ivo Robotnik, aka Doctor Eggman), thus freeing the woodland animal involuntarily inhabiting the mechanical body of each hostile.

Upon reaching the exit of every mandatory zone, Sonic is confronted by the principal villain, who with rare exception pilots a VTOL-capable aerial pod vehicle with an attached contraption tailored to the given zone’s qualities and designed to injure Sonic to the point of death. During each of these confrontations (boss fights), Sonic defeats the villain by damaging the vehicle operated by the villain, causing the contraption to separate from the vehicle, and then the villain flees in his damaged vehicle, allowing Sonic to free multiple woodland animals held captive in a uniform containment unit. Such is the basic formula of the events transpiring in every chapter.

Of Sonic’s itinerary, the zones subsequent to the first (Green Hill Zone) and preceding the penultimate (Scrap Brain Zone) are Marble Zone, Spring Yard Zone, Labyrinth Zone and Starlight Zone. Throughout these travels, six pocket universes, each known as a Special Stage and devoid of active hostiles, are also visited; and from each one, a hand-sized Chaos Emerald is acquired, so as to obstruct the principal villain from having it. As implied by Scrap Brain Zone being the penultimate of the zones, there is also a final zone, which compensates for the absence of a usual boss fight in Scrap Brain Zone. Unlike the zones preceding it, the final zone is not partitioned into acts and consists solely of the exit of a zone. Scrap Brain Zone and Final Zone together represent a single chapter, wherein Sonic attempts to infiltrate the core of the principal villain’s lair through the surface of a massive laboratory compound, but instead there is an uncounterable trap awaiting him in a corridor containing an energy barrier separating him from the villain and the exit of Scrap Brain Zone. The villain activates a mechanism that demolishes the floor upon which Sonic stands, thus Sonic falls into the water-filled Labyrinth hidden below the corridor and is left to infiltrate the core of the villain’s lair through a network of underground conduits. The first act of the zone takes place outdoors; the second, indoors; and the third, underground/underwater. The entrance of the next zone directly abuts the exit observed at the end of the second act of Scrap Brain Zone, and Sonic is returned to this indoor location but on the favorable side of the energy barrier.

In the core of the principal villain’s lair, a boss fight somewhat unlike any of the previous ones ensues, as the villain is not piloting his usual vehicle. Instead he has trapped Sonic in a chamber comprised of abutting pylon-like pistons designed for crushing physical objects. The villain is able to occupy part of the column of any of the pistons, which leaves him vulnerable to Sonic’s counterattacks. When the trap is defeated, the villain flees on foot long enough to reach his aerial pod vehicle, which he boards and abruptly takes off. Sonic, now free from the trap, pursues and strikes the vehicle, damaging it and preventing it from being able to move upward, and thus it drifts downward into a chasm, taking its injured occupant with it. The story ends with Sonic and the great multitude of freed woodland animals celebrating in Green Hill Zone; the six recovered Chaos Emeralds being relinquished and evaporating into the environment, which invigorates the island’s flora; and Sonic being hailed a hero.