After The Events Of The Prologue (Which Will Be Worked On In The Future), Yunna Receives A Letter From Their Cousins, Mario And Luigi, And Wants Yunna And Her Friends Visit Brooklyn To Visit Them To Learn About Plumbing And Fixing Pipes. But While Working Underground To Fix a Water, Yunna, Mario, His brother Luigi And The Rest Of Her Friends Are Transported Down a Mysterious Pipe And Wander Into a Magical New World. But When The brothers And Their Friends, Rachael and Ciel Are Separated, Mario and the Warriors Embarks On An Epic Quest To Find Luigi, Rachael and Ciel. With The Assistance Of a Mushroom Kingdom Resident Toad And Some Training From the Strong-Willed Ruler of the Mushroom Kingdom, Princess Peach, Mario and the Warriors Taps Into Their Own Power.