Ep 13. The Venice Menace / Super Koopa

Mario, Luigi, and Princess Toadstool have arrived in Venice and are greeted by the city's mayor and a group of potion-selling merchants. The mayor explains that the city has been plagued by a monster named Napoleon who has been disrupting the annual carnival and causing chaos throughout the city. The trio quickly realizes that Napoleon is actually King Koopa in disguise, using a magical potion to transform himself.

Meanwhile, back in the Mushroom Kingdom, Bowser has unleashed his latest plan to take over by transforming into Super Koopa, a massive and nearly invincible version of himself. He prepares to launch an attack on Princess Toadstool's castle, but his children are worried about the effects that the transformation potion will have on their father.

As Mario, Luigi, and the princess work together to stop Koopa's rampage through Venice, they must also figure out a way to break the potion's spell to stop him from causing any more damage. With the help of the potion-selling merchants, they formulate a plan to not only defeat Koopa but also turn the tables on him by giving him a taste of his own medicine.

Back in the Mushroom Kingdom, Bowser's children put their differences aside as they band together to try and save their father from being permanently trapped in his Super Koopa form. They manage to get their hands on one of the transformation potions and use it to turn themselves into super versions of themselves, hoping to take down their father and break the spell.

In the exciting conclusion, the two storylines converge as Mario, Luigi, and Princess Toadstool face off against Koopa in his Super Koopa form, while Bowser's children try to break the spell and save their father. Will the heroes be able to defeat Koopa and restore peace to Venice? And will Bowser be saved from being trapped in his Super Koopa form forever? Tune in to find out in this action-packed episode of The Adventures of Super Mario Bros 3.