Mario and Luigi try to rescue Princess peach once again from Bowser's clutches... don't they ever get a break?
This time, however, Discord has teamed up with the brute to have just a little chaotic fun with the Mario bros. This, in turn, has made things a little worse as Mario and Luigi's past foes show their faces in Equestria, as this transpires the mushroom world too receives threats they've never had to deal with before.