From Sonic Retro
The following are instruction manuals for Sonic Forces.
English story from Steam manual
Making yet another grab for global domination, Dr. Eggman launches a large scale offensive on an urban center. It is a desperate time for the survivors; all hope is lost!
Then, out of nowhere appears the heroic visage of the world’s fastest supersonic hedgehog—Sonic—who makes short work of the surrounding forces. But Dr. Eggman has a surprise up his sleeve.
Sonic finds himself face to face with a troop of much tougher enemies. One wields a mysterious power which proves too much for our hero. Sonic is defeated and captured, his present status unknown.
With nobody left to stop him, it is a matter of a few short months before Dr. Eggman succeeds in conquering all but a tiny fraction of the world.
Even in Sonic’s absence, the survivors weren’t ready to give up! A rag-tag Resistance was formed, with Knuckles as commander. Together with their latest recruit, they’re ready to do what needs to be done.
The fate of the world is in your hands!