It was a nice day in the Mushroom Kingdom, when suddendly this letter arrived to Peach's Castle:
Bowser said the truth: some time later, an enormous Banzai Bill hit Mario, and he couldn't do anything.
So Mario went to the scary "Underwhere", the destination of those who reach the "GAME OVER".
If he wants to quit this kingdom of dead souls, he must go to Queen Jaydes' Castle, a big building with 60 doors that lead to various places in the Mushroom Kingdom,
even Bowser's Castle.
So, in this adventure, you must get all the Stars to reach the door to Bowser's Castle, so you can defeat him and have your life back.