With the help of the wizard Mervin, Mario pulls the Golden Plumber's Helper from the magic sink and saves the Land of Cramalot from evil King Koopa.

When the Marios buy some magic garbanzo beans they are lead up the beanstalk to face a Giant Koopa.

Our heroes travel to Oceanworld where they discover Captain Koopa-Nemo is using a super submarine to terrorize the Mushroom People.