Bowser incarica ai suoi figli di catturare un principe gigante per trasformarlo in barboncino. Super Mario e il suo gruppo riescono a impedire il piano diabolico di Bowser.

Oggi è il compleanno di Wendy, figlia di Bowser. Il regalo che vorrebbe è l'America. Super Mario e il suo gruppo riescono a impedire questo secondo piano diabolico.

Lemmy e Iggy, figli di Bowser, rubano il sarcofago di una mummia in un sotterraneo egiziano. La regina mummia rapisce Mario perché somiglia molto al suo sarcofago della mummia. Questa volta tocca al fratello Luigi e al resto del gruppo risolvere questa situazione.

Larry, figlio di Bowser, trasforma sua sorella Wendy in una donna umana. Questo è un loro piano diabolico per tendere una trappola a Mario e Luigi. Riuscirano a liberarsi da questa situazione?

Bowser e la principessa Peach si sfidano in una competizione di voti per scoprire chi governerà il Regno dei Funghi. Bowser però imbroglia nel vincere questa competizione. Mario e Luigi intuiscono che Bowser deve aver usato una pozione per vincere la competizione.

Bowser e Larry ingannano Mario e il suo gruppo sul fatto di traslocare in un altro mondo. Però, sarà Mario ad avere la meglio sui due cattivi.

Il dottore del Regno dei Funghi ha chiesto alla principessa Peach di prendersi una vacanza alle Hawaii. Bowser, venendo a sapere questo fatto, manda il figlio Ludwig a creare un robot identico alla principessa in modo che possa manipolare Mario e Luigi.

Kooky and Koopa try to go back in time to stop the Super Mario Bros. from ever going down the drain in Brooklyn, but their plan backfires, turning them all into babies.

Fed up with Koopa's ways, Kootie Pie and Big Mouth bring a Hollywood movie monster to life and convince him he's their real dad.

Mario and Luigi enter a wrestling match so they can give the prize money to Toad to make up for a donation to the Mushroom Orphanage he believes he lost.

When Mario and Luigi get fed up with each other, Luigi soon finds himself having to save his brother from Koopa and Kooky.

Koopa brings TV hero Mighty Plumber to life and tricks him into robbing the Pipe Land Treasury.

Toad loses a magic wand to the Koopas.

Mario and Luigi wind up babysitting a brat from Brooklyn who finds his way into the Mushroom Kingdom.

Mario, Luigi, Toad, and Princess Toadstool seek the Doom Dancer Music Box in Koopa's Castle, but when the Koopas find out, they go after it themselves.

Koopa kidnaps Milli Vanilli and forces them to perform exclusively for Kootie Pie.

When a Real World family drives into the Mushroom Kingdom, the Mushroom People and the Koopas mistake them for aliens.

While wearing a Frog Suit, Mario almost drowns, but he is saved by Holly Mackerel, a mermaid princess. Holly falls in love with Mario and tries to marry him.

Koopa recruits a criminal from the Real World to teach the Koopalings how to commit crimes.

Hip and Hop turn Luigi and the King of Ice Land into dogs and run off to cause mayhem in Florida.

Kooky uses his new "Raiser Upper" machine to levitate everything in the Mushroom Kingdom to the sky.

After trapping the Super Mario Bros. and Toad in the Mushroom World, Koopa orders his kids each to take over one of Earth's seven continents.

When the Koopalings are forced to dispose of their garbage, they have it dropped on the Mushroom Kingdom and later Brooklyn.

Koopa gets another present for Kootie Pie - this time he plans to use his Doom Sub to chase everyone out of Venice, Italy then warp the entire city to Dark Land so Kootie Pie can have her own water park. The Mario Bros. are approached in Desert Land by an Italian gondolier and since Mario has a passion for the country of Italy, they couldn't resist. Armed with Frog Suits, can they stop Koopa in time?

Kooky has developed a pendant for King Koopa that will grant him the powers of the Mario brothers, but it can only be used in the real world. Koopa uses that to his advantage and lures his unsuspecting enemies into the real world using Luigi as bait. But the Princess manages to contact Toad, who races to get as many power ups to the Mario brothers in time.