In an apocalyptic future, the psychic Silver the Hedgehog, the people's last hope, has led a few refugees home to a ravaged and barren Emerald Hill Zone. Some time later, Silver reports to his boss of the "Underground Resistance", G.U.N. Commander Steele. The survivors' battle against a monster they call Iblis is getting harder every day, and while Silver can fight the monster, he can't destroy it. Only one option remains: Travelling 70 years into the past, to a time when Iblis was relatively weak.