(This story takes place after Sonic the Hedgehog 3).
After a devastating attack by Dr. Robotnik, a mysterious young hedgehog named Emma crash-lands on Earth with nothing but the shattered remnants of her past. Lost, heartbroken, and unaware of her true origins, she soon discovers that she is no ordinary hedgehog-she was created to be the strongest being in the universe, even surpassing Sonic and Shadow.
With Robotnik hunting her down to steal her power, Emma must learn to control the strength she never knew she had. As she joins forces with Sonic, Tails, Knuckles, and Shadow, she embarks on an epic journey to uncover the truth about her past, protect her newfound family, and stop Robotnik before he becomes unstoppable.
But with dark secrets lurking beneath the surface and a destiny greater than she ever imagined, Emma will have to face the ultimate question: Is she a hero... or a weapon?