When two wanted fellons (and childhood rivals of Mario and Luigi) named Wario and Waluigi team up with Bowser Jr. to help him steal magical comet fragments to create a Grand Star, Mario, Luigi and a new dinosaur ally must set out on an even bigger adventure to stop his plan to rescue Bowser. Their adventures will take them across the Mushroom Kingdom, Sarasaland and Yoshi Island, and sees them meeting new friends (and foes!) along the way.
