When King Harkinnian decides to build a Royal Water Park for the enjoyment of all his subjects during the hot weather, it seems like a simple enough project. But a hitch rapidly develops when the water park construction suffers a a series of strange attacks by water creatures!
When Toad accidentally spills a shrinking potion on the Marios they must overcome the perils of giant Troopas, drain pipes filled with monster-sized bugs, and Koopa's big feet.
When Ganon captures Zelda, he has a most evil plot in mind: using the Crystal of Control he has just discovered, he will force Zelda to marry him -- and then Hyrule will be under his control!
In a flashback to their days of Basic Draining at the Brooklyn Academy of Plumbing, Mario and Luigi tell of their troubles with Drain Sergeant Kooperman and why the President of the United States called them to the White House.
Link rescues an old man named Sleazenoze from attackers in the woods, and as a reward, the old man gives Link a brand-new fancy sword in exchange for his old one.
Our heroes travel to Desertland where they discover Koop-Tut has enslaved the Desertlanders and is enforcing an evil set of rules known as the Ten Koopmandments.
Mario and Luigi come to El Desertland's rescue against the evil Capitan El Koopa by donning black masks and capes to become the legendary heros "Zero" and "Zero Plus One".
When Zelda finds a huge and beautiful mirror in her room, she naturally assumes that it is a present from Link. But in fact it is a present from Ganon -- as Zelda soon discovers!
Koopa has eaten Dr. T. Garden's secret weapon -- Super Sushi -- and has been transformed into the huge monster "Koopzilla" who is terrorizing the city of Sayonara.
King Koopa acquires a magic flute that makes him irresistible to the children of Pastaland and he leads them all to his castle until the Marios come to their rescue.
When Link rescues a fair maiden from a ferocious dragon, he gets a kiss as his reward. But the maiden is one of Ganon's evil creatures in disguise, and Link is turned into a frog!
Our heroes are lured into a spooky castle in the Land of Turtlevania where Count Koopula plans to turn the Princess into a spaghetti-sauce-sucking vampire.
The Marios seek the help of the legendary hero Hercufleas, but find it's the hero himself who needs help to recover the "Great Balls of Fire" stolen by King Koopa.
King Koopa steals every drop of spaghetti sauce in Car Land, but our heroes come to the rescue of the Mushroom Colonists when Toad turns super and saves the day.
The Marios finally find a way back to Brooklyn -- and are faced with a big decision when Koopa captures the Princess just at the moment they can return home.
Our heroes think they are going to a benefit Spaghetti Dinner at the Linguini Empire Colosseum, but it's all a plot by the evil Emperor Augustus Septemberus Octoberus Koopa to feed the Marios to the lions.
Mario and Luigi disguise themselves as Riverboat Gamblers to rescue the Princess who is held captive on Captain Koopa's sidewheeler, "The Sinister Star".
Koopa the Kid has kidnapped the Princess and hidden her in the Old West, and when Mario and Luigi ride into town to save her they find Koopa has branded them wanted outlaws with rewards on their heads.