The two heroes of the Mushroom Kingdom meets two survivors of a mass genocide of a destroyed world by the humanoid robot known as Mecha Sonic. The heroes of both worlds now must join forces to stop him from requiring the seven Chaos Emeralds before all is lost.
After taking his own life to end the Boos, Mario had suddenly ended up on another planet, filled with robots. Join our plumber hero as he defends this planet from a dangerous threat, the Absolute Solver.