When Opaline gains the power to travel across the multiverse and cause chaos across all the realities, the fate of the whole Multiverse relays on Sonic's hands and Sunny's hooves.
While fighting against Dr. Eggman, Sonic accidentally tears the wall between dimensions, accessing to several universes that might feel familiar and new at the same time.
When Eggman accidentally sends the Chaos Emeralds to Equestria's human world, Sonic races against time to bring them back before they fall on the wrong hands, as he also meets familiar faces that soon enough become new at the same time.
After the incident in the Starfall Islands, the Mobians and the Mane 6 decides to track down and stop Dr. Eggman and Opaline before they can take over their worlds.
In search of the missing Chaos Emeralds, Sonic becomes stranded on an island teeming with unusual creatures as he tries to rescue his friends from powerful forces known as the Titans.
The Mane 5 and Team Sonic try to find the stolen Unity Crystal before magic disappears forever, while Team Sonic unfolds some mysteries on their own, like find their way back home.
The Mane 5 try to solve the magical problems of the new earth pony magic, while Sonic starts to face shadows from his past as he, Tails and Knuckles try to find their way back home.
Living in Maretime Bay, our Pony BESTIES are having a ton of fun together! And with so many Mobians in the crew: Adventures, wacky situations and tons of more fun are guaranteed!
Sonic activates an unfinished machine from Eggman, and ends up on a land of colorful talking ponies. Now, he's going to need to find his way back, while he helps some new friends to restore the magic.