Sonic outraces his robotic counterpart but Eggman's talk of something about the fastest and strongest dawns on him. Eggman then appears and compliments his victory and issues Metal Sonic to race against him to see whether Sonic is really the fastest thing in the world. Sonic comes out on top, feeling proud of himself for doing so. Confused at his new surroundings, Sonic encounters Shadow and realizes he was looking for Eggman as well, leading to a race between the arch-rivals. Silver's attitude starts to get on Sonic's nerves and they both confront Eggman's Egg Falcon and each other.Р”Р„s the fight concludes, Silver deems it too dangerous to get close and teleports Sonic to Sky Park Zone.

After a race against Silver through Colosseum Highway Zone, Sonic reaches Eggman and once again demands the cards from the angered scientist. Not one to pass up a challenge, Sonic challenged his new rival. The hedgehog stated he was Silver and he needed to get to Eggman first. Sonic was not too fond of the latter's haughty attitude and asked who he was. Sonic tries to chase him down before a silver hedgehog cuts him off, having business to take care of. Knuckles angrily states that was not part of Eggman's deal, but Sonic is confident and accepts the challenge.Р”Р„fter defeating the Egg Turtle, a vindictive Eggman turns to leave afterwards. His enemy responds that if Sonic could defeat his Egg Turtle, he may allow the hedgehog a card of his choosing.

After reaching Eggman, Sonic demands Tails and Amy's cards. Sonic's StoryР”Р„fter accepting Eggman's challenge, Sonic races against Knuckles throughout Forest Falls Zone to reach Eggman first. Eggman responds by showing him a card of the Master Emerald and announces his plan to achieve world domination by snapping everything with his camera to obtain the 'ultimate card collection' and issues Sonic and Knuckles a challenge to stop him and reclaim their desired cards before making his escape. Sonic panics in disbelief upon this sight and at that moment, Knuckles the Echidna appears and yells at Eggman for causing the Master Emerald to disappear.

While Tails is conversing to Sonic about this, there is a sudden flash of light and Tails is gone, appearing as a card in Eggman's hand. Sonic does not believe in this but Tails explains that it is scientifically possible for Amy to end up in her current state. Eggman reveals a card containing Amy Rose he took with a special camera which shocks Sonic and Tails. Eggman who is already waiting for them and confront him, suspecting that Eggman is plotting an evil scheme. Sonic the Hedgehog and his best buddy Miles 'Tails' Prower investigate a mysterious land mass named ' Onyx Island' which has suddenly appeared as if out of nowhere. Spoiler warning: Plot, ending details or any kind of information follow.

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