Its just a normal day in Sinister Street. John Becott lives on that street that's when ninjas start to invade. People believe that they came from China. Find out what happens in Ninja Invasion.

Mario and Sonic's worlds are in chaos. A mysterious new foe and an organization group have used their powers to collide their universes into one and slowly starts to collapse. Mario and Sonic and co must team up and work together and stop this new threat and say their universes or else everything will be turned to nothing.