This is the story of a lifelong friendship between Y/N and Maria Robotnik, beginning in their childhood. This friendship unexpectedly intertwines with the life of Shadow the Hedgehog when they meet. Despite their differences, they form a strong bond.
However, this newfound friendship is tragically disrupted when G.U.N. agents intervene, forcibly separating Shadow from his newfound family. Desperate to protect Shadow, Professor Gerald, and Maria, Y/N's selfless act results in the tragic loss of her own life. To ensure the earth is safe, the G.U.N. commander orders him to be placed in stasis.
Fifty years later, Shadow is awakened from his prolonged slumber. Professor Gerald, Maria, and Shadow now find themselves in London, wanting Revenge, wanting G.U.N to pay for Taking Y/N away from them.