Mario told Luigi all that happened over the course of the adventure so far, about the meteors, the moon, Rashay, and Peach's kidnapping.
Luigi: That's horrible! From what I heard, this "Rashay" guy seems a lot more threatening than Bowser could ever be. We gotta save Peach! Who knows what he'll do to her?
Mario: Don't worry! We will do whatever it takes to stop that… that monster! Now, let's go back to Bob Omb Village and meet up with Yoshi and Toad.
Luigi: Okie dokie!
They exited Dusky Doomed Dale, which was now no longer cursed thanks to Kamek being gone, and were back in Bob Omb Village, where Toad and Yoshi were waiting for them.
Toad: Mario, you're back!
Yoshi: And look who's with him!
Luigi: Yoshi! Toad!
They hugged each other, happy that Luigi was free.
Yoshi: So how was it in there, Mario?
Mario: It was… quite an adventure… to say the least. Not a very pleasant one, though.
Yoshi: Okay, so where should we go next?
Toad: Let's take a look around.
They explored more of the desolate Bob-Omb Village. They weren't sure where to find the next entrance until Yoshi saw a cliffside with a sign next to it, showing the word 'CAUTION!' over a pit of 8 bit lava.
Yoshi: Guys, I think this is it.
Toad: I don't know, Yoshi. It looks dangerous…
Luigi: Yeah! The 'CAUTION' sign is a dead giveaway.
Mario: Well, Rashay would be smart to hide the stars in dangerous places, but don't worry bro. We've been in lava filled places before. Remember Lethal Lava Land?
Toad: Lethal Lava-what?
Mario: Oh, right. You weren't there, Toad. But the point is, we've got each other! Some lava place isn't gonna stop us.
Luigi: I suppose you're right. We just gotta be careful. Here we go.
The quartet stepped inside.
Melty Molten Mountains
Melty Molten Mountains was an area up in the mountains that was half lava, half ice, if the name hadn't hinted you at that already. The place was filled with enemies based around the elements of both fire and ice. Our heroes spawned on the fire side of the area, and were sweating almost immediately.
Yoshi: Gee! I hope we don't spend too long here, because intense temperatures are not good for us yoshis.
Mario: Don't worry, Yosh. We'll make this as quick as possible. Let's check in the volcano, first.
Star #1: Clamber up the Volcano
Starting on the lava path, Mario and friends trekked into the volcano, passing by a Molten Freezie. Which were Freezies, except they were molten hot and would burn people rather than freezing them. They blew fire at Luigi, burning him.
Luigi: YAAHHHHHHHH!
Luigi rolled for a bit to knock out the fire.
Mario: You okay, bro?
Luigi: I'm fine… I'm fine…
Toad: How can Freezies exist in a place like THIS?!
Yoshi: Weird…
When they got in the volcano, they had to precisely platform on a series of spinning platforms, before reaching the top where the star was just sitting in a cave entrance. They quickly grabbed it.
Star #2: Frosty Veers
Back at where they originally spawned Mario led the team into an area to the left. But when they got in there, their bodies suddenly jumped from really hot to really cold in a matter of seconds. There were snow, ice, Freezies, and Spin drifts on this side of the mountains, somewhat resembling Snowman's Land.
Luigi: Brrrrrr! How can f-f-fire and ic-c-ce coexi-i-ist in the same location?! THAT MAKES NO SENSE!
Yoshi: Brrr! Well… l-let's make this quick!
Toad: This p-place sorta reminds me of H-Hailfire P-P-Peaks from Banjo-Tooie.
Mario: Toad, y-you're breaking the f-fifth wall.
Toad: Ssss-Sorry.
The four explored around the icy snow area for a bit. They even saw a Freezie in the lake.
Luigi: I guess that's why there are Molten Freezies in the fire part.
After crossing the frozen lake, they entered a cavern just next to it.
Inside, there was an icy slide that looked similar to the one from Cool Cool Mountain, only this one was more narrow.
Toad: Yay! Slide time! Last one to the bottom is a rotten 'shroom! Yippee!
Toad went down first.
Yoshi: Toad! Wait!
Yoshi followed, along with Mario and Luigi. For the most part, they had fun. But at one point, Toad accidentally pushed Luigi off the slide, and he landed at a lower part, making him get to the star at the bottom first.
Luigi: Aw yeah! Luigi number one!
Toad: Hey! That's not fair! You cheated!
Luigi: Says the one who pushed me down and MADE ME WIN!
Toad: That was an accident! I'm sorry!
Luigi: Yeah, sure kid.
Toad grunted in annoyance, but then they grabbed the star.
Star #3: Hot-Cold Puzzle
Still in the icy half of the area, the quartet came out of the cavern and found another opening leading to a set of stairs.
They went up the stairs and once they arrived at another portion of the area, they ground pounded a patch of ice in the ground to get to the bottom. At the end of the underground path, they found an area with eight water filled panels on the ground; some of them were frozen and the others weren't. There was also a closed door probably leading to the Star.
Toad: What are we supposed to do here?
Yoshi: I dunno. I guess it's some sort of puzzle. I'm no good with puzzles.
Mario and Luigi took a moment to analyze the puzzle. Looking closely, the bros noticed that some panels had blue tiles at the bottom, and others had red tiles.
Luigi: I think we have to freeze the blue tiles, and unfreeze the red tiles. Seems to make sense to me.
Toad: But how are we gonna do that? We don't have fire or ice powers
Mario: Don't worry. I came prepared!
Mario took out two fire caps, and two freeze caps.
Mario: Just in case of emergency.
Toad: Awesome! I haven't used powerups in awhile.
Mario and Yoshi put on the fire caps to become Fire Mario and Fire Yoshi, like before. Luigi and Toad put on the freeze caps. Luigi's cap and shirt turned into a cerulean color while his overalls turned green. Toad's mushroom cap turned red while the spots became cerulean blue. His blue vest turned a cerulean color. They were now Freeze Luigi and Freeze Toad.
Freeze Toad: Yeah!
Luigi looked confused.
Freeze Luigi: Huh? I remember our friend Aqua using the ice flower back in Noki Bay, and she turned into some sort of living ice sculpture. This is just a change of clothes like the fire flower. So what even is this?
Fire Mario: It's probably a different kind of ice powerup. Let's call this one the freeze powerup to avoid confusion.
Freeze Luigi: Sounds fair enough.
Fire Mario and Fire Yoshi unfroze the red tiles, while Freeze Luigi and Freeze Toad froze the blue tiles. Once they were all in their correct state of matter, the door opened up. But guess what? THERE WAS MORE!
For this next room, the four panels had spikes underneath them, and there were bombs and snowballs rolling down. The heroes this time had to make the bombs fall into the spikes and let the snowballs proceed into the holes on the walls by once again freezing and unfreezing the panels. It would likely not be easy doing it alone, but with four people, it wasn't too hard.
When all of the snowballs were in their holes, the Star appeared.
Fire Mario: Alright! Teamwork, everybody!
They all high fives and claimed their star.
Star #4: Beat the Blarggs
They didn't lose their powerups, however. They still had to do one more thing with them. The fire heroes were teleported to the ice half, while the freeze heroes were teleported to the lava half.
There, they had to beat two different blarggs that had the elements matching their environment. They weren't hard to beat, however. As it just took a few shots of the opposite element to defeat them.
After beating both Blarggs, the Star showed up in the area where the lava and ice halves meet, where the four reunited.
All: Yahoo!