Here is an overview of the series, via Netflix:

About

The action-packed adventures of Sonic the Hedgehog go into overdrive when a run-in with Dr. Eggman results in a literal universe-shattering event. Desperate to piece his prime reality back together and save his old friends, Sonic races through the Shatterverse, discovering strange worlds and enlisting new friends in an epic adventure of a lifetime!

Synopsis

It’s the Sonic you know and love until an incredible twist thrusts Sonic into a new adventure featuring a reinvented cast and Sonic like you’ve never seen him before, where the fate of the multiverse rests in his gloved hands. Sonic’s adventure is about more than a race to save the universe from the evil machinations of his longtime nemesis Dr. Eggman and his army of badnik robots, it’s a race to save his friends, friends that he took for granted.

Watch a new teaser trailer below.

Teaser Trailer #2