When Bowser, the king of the Koopas, discovers a powerful gem that can destroy and rebuild civilization, he decides to kidnap Princess Peach (yet again) to lure Mario in to finish him off. But, when the gem starts to overreact, it takes control of Bowser and causes mass destruction to his castle, Mario, and Peach by accident. It separates the Mario and Peach across the Mushroom Kingdom away from Bowser. With the gem also effecting other worlds, Sonic The Hedgehog, known as the fastest thing alive, along with his friends, get caught in a vortex sending them to the Mushroom Kingdom as well.
