Four months have passed since their battle with the Disney Villains. Twilight is getting ready for the science fair at Canterlot High. So she invited Sunset Shimmer and her friends over on a stormy night to see what she invented a machine that will see different worlds and dimensions full with new discoveries and wonders but when the lightning bolt hit the rode of Twilight's house the Rainbooms got transported into another realm where they discovered a nightclub where all the various Disney characters go to and meet the one and only Mickey Mouse who will help get back to their world before the science fair.