Mario and Luigi went on a walk but Bowser wanted Revenge so he tracked him down. Mario and Luigi went to diffrent ways but Luigi got found by Bowser and got trapped.Mario went back the same way Luigi came up and Mario found a letter on the ground.He picked it up the letter said "Ha i've got Luigi trapped in my castle so if you want your bro back you will have to find your way to my Castle from Bowser". Mario went on a quest to save Luigi and eventually he managed to beat Bowser (and save his bro)...but Bowser screams "REVENGE WILL BE MINE! REVENGE...WILL...BE....MINE!!!!!!!!!!!!!!!!!!!!!!! REVENGE, MARIO REVENGE! REVENGE!!!!!!!!!"