In a new world, Sonic's team discovers that they have arrived at the island of Okinawa, where they meet new friends Stitch and Yuna and some new villains who do not look like from Sonic world. Meanwhile, they discover strange evil experiments and robots created by an unknown but new villain. Then they both realize that the whole world and Stitch’s cousins/other good experiments are in danger. And now they have to unite, to save everything
