Miles Powers was living a normal life. However that all started to change when he turned 15. His family had to move to Bayville due to financial strain caused by his late grandfather's debts so sadly, he had to leave his old home and friends behind. He didn't fault his parents for the move, he knew it wasn't their choice. He only wished his grandfather had been more careful with money. Despite the support his parents gave him, there was one negative thing that Miles still felt, loneliness. He didn't have any friends in Bayville and because he was interested in computer and video games that most people his age would scorn as children's games, namely Sonic the Hedgehog and Pokémon, he didn't think he'd make any friends anytime soon.
One night Miles had stayed up late playing a Sonic the Hedgehog game. He'd been trying to get an S rank in one of Tails's stages, and his favorite Sonic character, Tails, was still on his mind as he'd gone to bed. Miles had a strange dream. He dreamed that he was walking around Mobius in the form of Tails. Then his namesake tails started to hurt. The pain got worse over time, then things started to fade like they normally do when a dream ends, but the pain remained. Miles opened his eyes to see the ceiling in his room, but what was that weird pain? It felt as if he was lying on an appendage, but his arms were at his sides, so what was going on? He sat up and reached for the switch for his bedside lamp. It seemed further away than usual. As he fumbled with it, he noticed it felt like he had gloves on somehow. The light came on and Miles drew a surprised breath as he looked at himself, except that he wasn't himself: he was Tails. "This can't be real" he said aloud, and was shocked to find out that not only did he look like Tails, he sounded like him too! He got out of bed an massaged his aching namesakes. After a while he noticed his desktop computer that had failed shortly after the move. Something in him took over and he eagerly opened the computer's casing. In a few minutes he'd fixed the computer. He tried the power button and the machine turned on and ran without trouble. After putting the computer in sleep mode, Miles yawned so he figured it would be best to go back to bed. He lay on his side so that he wouldn't sleep on his tails again.
Miles woke to sunlight streaming into his room and his mother calling "Miles, breakfast!" He felt like himself, just a little groggier than usual. He quickly dressed and came downstairs. "You slept in later than usual" his mother told him, "Is everything ok?" Miles thought back to the previous night's events and replied, "I'm fine, I just had some weird dreams." As they ate breakfast Miles couldn't help but feel that the part of the dream where he fixed the computer seemed strangely solid in his mind, and the setting seemed just like his room would be during the night. Then he thought about the fact that he was a two tailed mobian fox for that part and decided that it was just an unusually vivid dream.
Since it was a weekend and he'd finished his homework on Friday, Miles decided to go play some video games in his room. However once he was up there, a blinking light caught his eye. His desktop computer's power light was blinking. He thought it had to be a trick of the light. However he took another step and saw the light blink again from a different angle. Miles decided he'd press the power button on the computer, just to see what would happen. He was very surprised when the machine whirred to life as it woke up. It sounded quieter than usual, but it was definitely running. "Weird" he said to himself, "Was that really just a dream?" A few scenes from his uncle's comic collection about super heroes discovering their powers flowed through his mind. He jokingly decided that he'd try to trigger his powers, not truly believing that he had any since after all the computer may have simply not started all those other times he tried out of pure coincidence.
Miles closed his eyes and focused what it was like to be Tails, based on his dream, and he thought of himself as Tails. His body suddenly felt different. He opened his eyes to see that his room looked bigger. He looked down at himself and saw the fur, gloves, and sneakers that he'd seen last night. He felt the presence of his tails again, so he turned his head and saw them. He could even move them just like his arms and legs. Somehow, he also knew how to use them to fly. So he flew onto his bed experimentally and couldn't help but yell out "I love this!" The excitement was short-lived, because then Miles's sensitive fox ears picked up the sound of footsteps coming towards his room. He frantically thought about being his human self again. His body glowed and a grew to normal size just before his mother walked into his room. "I heard a strange voice" she said, she didn't notice the computer running because of its position relative to her. Miles thought of an excuse and sheepishly replied, "I was practicing my impressions, I guess I got carried away" His mother got the feeling that Miles wasn't telling her the whole story, but decided not to force the issue. Meanwhile at the Xavier institute, Cerebro had just detected a new mutant, Miles Powers.