Mario & Luigi: Superstar Saga - Part 27: Princess Peach in the Beanbean Kingdom
Mario & Luigi head to the Beanbean Airport that's south from Beanbean Castle. Princess Peach - still with without her real voice - was making a visit.
But once the Mario Bros. arrived at the airport, Lady Lima was there to tell them about a Piranha Plant issue. Those plants have covered the road Peach's plane will land on. The plumbers need to get rid of them.
You can fight the Piranha Plants, but if you leave the screen you fought them on and come back, they'll respawn!
There's a fountain nearby. What you have to do is feed him water, and then have Luigi's Thunderhand tickle the water out of him from behind.
Do this with these Pirahnna Plants and they will be aggressively waterlogged. Then Thunderhand them directly to get rid of them for good. There are 5 of these pesky plants and they're all connected to a giant egg.
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When all 5 of these Piranha Plants are gone, the giant egg will hatch out a giant Mom Piranha!
The only attacks that will truly damage Mom Piranha are ones that directly hit its face. If they go for its head, it'll be protected by its eggshell. You have to go for the teeth!
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Defeating Mom Piranha will shrink it small enough that Luigi finishes it off by just sitting on it. Now Princess Peach's plane can land!
When Peach approached the Mario Bros., they were prepared for the worse as they remembered that her attempt to talk after losing her voice led to an explosive disaster.
But then...
...
Peach was able to talk normally. The plumbers had figure out how in the heck did she get it back.
Toadsworth revealed... that *PEACH NEVER ACTUALLY LOST HER VOICE AT ALL!!!*
This was all the Prince Peasley's doing. He had realized soon enough of Cackletta's plan to stealing Peach's voice. So he beat them to the punch by letting Peach know about this herself, hiding herself away while Cackletta was stealing from a fake Peach.
The fake Peach? She was actually a Birdo! THIS is why the Beanstar got so angry at "Peach"'s voice.
Queen Bean came in to add that her whole castle had this planned out. Peach's biggest regret is not telling Mario & Luigi about this sooner. She would've done so sooner... had Bowser not arrived to try and kidnap her, again.
At the very least, at this point (to their knowledge...) Mario & Luigi has defeated Cackletta and saved the Beanbean Kingdom from her terror (again, to their present knowledge...).
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Later on, Prince Peasley decided that he's gonna go looking for the four missing Beanstar pieces by himself. He'll let Mario & Luigi go to explore more of the Beanbean Kingdom with Princess Peach.
Seeing Peach again, she wanted to go visit a mushroom town known as Little Fungitown. Apparently it's a migration town of Toads in the Beanbean Kingdom.
Queen Bean had to warn Peach that reaching Little Fungitown will involve first traveling through the dangerous Teehee Valley.
Toadsworth was angrily against this idea, UNLESS the Mario Bros. escorted her. Luigi refused, but Mario... "made" him agree to it.
The entrance to Teehee Valley is north from Beanbean Castle. Peach will meet up with you once you've entered into the desert.