Netflix Sonic Prime Season 1 and 2, Recap, WARNING SOME SPOILERS!

During a battle with Dr. Eggman, Sonic shatters the Paradox Prism, a crystalline artifact with reality-bending powers, which drastically warps Sonic's main universe and creates the "Shatterverse", a multiverse of alternative dimensions called "Shatterspaces", each of them formed by one of the Prism shards and inhabited by alternative versions of Sonic's friends (Tails, Knuckles, Amy Rose, Rouge and Big), but lack their own versions of him.

Sonic first ends up in New Yoke City, a futuristic dystopian version of Green Hill ruled by a group of Eggman variants who call themselves the Chaos Council, who used their realm's shard to conquer it with ease. Even worse, they seek to extend their reach and conquer the entire Shatterverse after learning of its existence through Sonic, but are opposed by him and a resistance formed by denizen versions of his friends. While seeking to reassemble the Prism and restore his reality, which has been rendered dull and lifeless by the shattering, Sonic ventures to other Shatterspaces such as Boscage Maze and the No Place, two worlds covered in jungle and water and inhabited by feral and pirate versions of his friends respectively.