The Trojan Koopa
In an island owned by King Koopa, King Koopa has kidnapped Princess Toadstool again and is holding her in his island fortress with a ball and chain to her ankle. The Mario Bros. and Toad arrive to his island with a bathtub, when suddenly, King Koopa order the Hammer Brothers to attack them. After escaping their hammers, Mario figures out a plan to go into the wall to save Princess Toadstool. Mario ties a plunger to his feet, but falls due to the Hammer Brothers breaking a brick he was standing on. Luigi tries to go though the wall by a long stick, but fails. Toad tries to leap, but he falls, lands on a trampoline, and is bounced down to Mario and Luigi.
After they realize that they cannot save Princess Toadstool, the Hammer Brothers attack again. However, Mario defeats them by letting the Hammer Brothers hit each other. After that, Mario changes them into Mario and Luigi look-alikes, and send them into the water on a boat to make it look like they gave up and moved away. They also make a statue of King Koopa so they can sneak in. When King Koopa sees this statue, he becomes in love with it. He does not notice that Mario, Luigi, and Toad are in it. Later, Toad, Mario, and Luigi come out, only for the Hammer Brothers to escape and come back. Mario and the gang are ambushed by King Koopa, four Shyguys, and the Hammer Brothers.
Princess Toadstool wishes that she could help her friends "upon a falling star...man." Toadstool's wish comes true, and she became Super Princess with it. She defeats the Hammer Brothers and the four Shyguys. After she saves the Mario Bros. and Toad, King Koopa escapes, though he uses a sinking bathtub to escape and the Mario Bros. use their statue.
Animation and continuity errors