The Two Brothers,Mario & Luigi have started their plumbing jobs as the Super Mario Bros. After a strange leak is going on in Brooklyn,Mario & Luigi went to check it out. They notice a green pipe and they get accidentally sucked in. They ended up in the Mushroom Kingdom where they were taken to the castle by the guards where they met Princess Peach. Then,A Guard came to warn her that Bowser is approaching.
Bowser & his armies attack the castle and kidnaps Peach. Toad begun training Mario & Luigi to get power by taking any Mushroom & Flowers. They begin their journey.
Meanwhile at Bowser's Castle,He convince Peach to marry him so they could rule the Kingdom,which Peach is disgusted due to his Evil Nature. Bowser learned that Mario & Luigi are coming this way. He sent in Petey Piranha to deal with them.
Mario,Luigi,& Toad are ambushed. Mario uses the Fire Flower to transform. He shoots Fireballs at Petey Pirahna,setting him ablaze.
They reach Bowser's castle to confront him. Mario fought with Bowser while Luigi quickly freed Peach and they escape. Bowser pursues them in the clown car. Mario & Luigi uses each cape feather to transform and damage the Clown Car,sending Bowser into the air. Mario & Luigi are hailed as Heroes before they celebrate their Spaghetti dinner with Peach & Toad.