Netflix’s Sonic Prime, a new animated series starring Sega’s iconic blue hedgehog, will premiere on December 15th, Netflix announced on Thursday. The streaming company released some new plot details that indicate Sonic will have to deal with some major multiverse shenanigans.

“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,” according to the Sonic Prime synopsis. A new poster littered with shards (from Chaos Emeralds?) hints at some of the “reinvented” characters to come. In one, you can see a reflection of what appears to be a Metal Sonic-ized Amy. In another — I hope you’re sitting down for this one — Tails is wearing a shirt.