(Y/n), Mordecai, Rigby, Thomas and Pops are at a store named Fast N' Easy and buying a slushy to take photos of their faces after drinking the slushy. The trio open the door. "Sluuushyyyyyy!"Mordecai pays for the slushy and Pops takes the slushy. "Reaadyyy?" Rigby asked, holding the camera. "Let's do thiiiyuuuuus!" Mordecai drinks the slushy while the 4 cheer "Brain Freeze!" repeatedly. He then gets a brain freeze then makes a weird face and Rigby takes a photo.

"My turn!" (Y/n) said. She drinks her slushy and also made a weird face after being "brain frozen" and another photo is taken. Rigby is next and does the same, then Pops drinks the slushy then kneels to the ground and reached his head then laughs. "Ahhahahahaaa, brain freeze!" He also makes a weird face then gets a photo taken. "Haha, here I go!"

Thomas drinks the slushy but didn't make any weird face like the others did. The slushy didn't "brain froze" him then laughs and taken a photo. (Y/n), Mordecai, Rigby and Pops looks at the photo for a bit then laugh. "Dude Thomas, you call this a brain freeze face?" Mordecai asked.

"Yeah, your face didn't even freeze." (Y/n) said "Weak-saaaauce!" Rigby said. "I agree, jolly weak show." The 5 of them laughed. "Okay." Thomas pauses for a bit. "Wait, wait, wait!" He opens the top of the cup and chugs the whole slushy but nothing happens and just laughed. "Dude! What is wrong with you?" Rigby asked. "I guess he has immunity to the cold or something, like Elsa from frozen." (Y/n) joked, and Thomas snickers. "Oh shut up." He said playfully. "Why don't you just "let it go" Thomas?" She joked, and her best friends snickered again. "Very funny, (Y/n)!" Thomas said.

and she laughs. "I got this, I got this." Thomas goes inside the store. "Hey man, what's the coolest slushy you got?" He asked. "Uhh, they'd be the cool cubed. It's imported from the arctic and contains real glaciers, but I strongly recommend that you reconsider-" Thomas cuts him off. "I'll take it. Big swig size." The cashier gets the big swig cup, puts on goggles, gloves and puts the slushy to standard to cool-cubed. "Go easy on this bro." Back outside of "Fast N' Easy", (Y/n),

Mordecai, Rigby and Pops are saying "Chug! Chug! Chug!" repeatedly while Rigby is holding the camera for the picture. "Okay. Okay. Here it goes." While Thomas goes for it, ice goes up to the tip of the straw and then he sips it while the other three keeps repeating. When he finished, nothing happened and he is calm again. "Lame." Rigby said. Thomas suddenly got a "brain freeze"

face but is frozen still by the cool cubed slushy. "Ah dude!" Rigby said. "Take the picture! Take the picture!" Rigby takes the picture and the three of them laugh. "Dude, this is gold!" (Y/n) said. "Thomas, check it out!" Thomas said nothing then falls down then Rigby chuckles while taking more pictures of Thomas's "brain freeze" face, but (Y/n) starts to look concerned. "Thomas?" She asked. "Now that's a brain freeze. Alright, come on." Mordecai said. The three walk away but notice Thomas is still on the floor

"Thomas? Thomas are you okay?" (Y/n) asked, going to kneel beside him, but he doesn't answer. "Thomas? Come on." Mordecai said. "Let's go." Rigby said. "Thomas, come on!" (Y/n) shakes him multiple times, but it still does nothing. "Guys, he's not moving!" (Y/n) shouted worriedly. They all get worried and look at each other, then approach the duo. "Thomas?! Thomas?!"

Mordecai and Rigby shouted. (Y/n) touches his head. "Ahh! He's freezing! He's not coming out of his brain freeze!" She shouted. "Is it supposed to last that long?" Rigby asked. "I don't think so!" (Y/n) holds onto Thomas's arms. "Thomas! Thomas!" She shouted. Rigby puts a paw on her shoulder. "Calm down, (Y/n)." He said. "What do we do?" Pops asked. "We have to unfreeze him." Mordecai said. Later the gang is in the restroom, where (Y/n) opens the shower curtain, Rigby turns a shower nob to hot. Then, Mordecai puts Thomas in the shower but, Thomas leans to the wall but, Mordecai puts him back correctly. "Hot towel." (Y/n) said. Pops feels the heat of the towel. "Ooh! Ooh! Ooh!"

He gives (Y/n) the towel and she puts it on Thomas' head. "Check him! Check him!" Rigby shouted. Mordecai checks, but Thomas is still frozen. "Uhh! This isn't working! He's even colder somehow!" (Y/n) said. They go to Skips' home while Skips opens the door and they showed up for his help. "Bring him in. Hmm...Yeah I've seen brain freezes before, but not as bad as this." Skips nods his head.

"This is beyond my medical knowledge. Luckily, I know a guy who can help. He's been treating Pops' family for generations." He said. "Oh, of course! Dr. Henry!" Pops said. "Lets call him." (Y/n) said. Next Dr. Henry's car flys down to the front of Skips' house. Pops opens the door and it's Dr. Henry. "Oh, Dr. Henry! So good to see you!" Pops said. "Hello Pops. How's that old pinkie of yours?"

Dr. Henry asked. "Pop-notch!" Pops chuckles. Dr. Henry checks Thomas' ear which is approved to be filtered with ice. "Hmm. So, he drank a slushy, you said." Dr. Henry said. "Yeah." Mordecai said. "Did you make him drink it?" Dr. Henry asked. "Uhh...maybe?" Rigby asked. Dr. Henry doesn't seem convinced. "Yeah, we did." Rigby said. "Can I see the cup?" Rigby gives the cup to Dr. Henry. "Hmm." He makes a sound with his tongue. "Cool cubed, big swig size. This is quite a pickle. Well, I got some good news and bad news. The good news is that the core of Thomas' brain isn't completely frozen yet which means, there's still a chance to throughout." He said.

"Okay. What's the bad news?" Mordecai asked. "The bad news is that the cool cubed slushy is still very active, it's working its way to the brain core as we speak. If it gets there, Thomas' brain will stay frozen. Forever!" The four of them gasp in horror. "What do we do?!" (Y/n) panicked. "Simple. I just shrink you to little tiny people then you go inside of Thomas and you can stop the cool cubed slushy before it reaches the core. It's a dangerous procedure but, it's the only way to save him.

Any volunteers?" Dr. Henry asked. "Well, you and Pops have fun." Rigby said, and Mordecai punches Rigby. "No dude, we got Thomas into this mess, so we're gonna get the mess out of him!" Mordecai was unsure if that made sense. "I think." He said. "Exactly." (Y/n) crosses her arms, but Mordecai and Rigby look at each other worriedly. "What?" She asked. "Uh, actually, (Y/n), we think you should stay here." Rigby said. "What?!" She asked. "It's too dangerous in there. Who knows what might happen to you." Mordecai said.

"Are you kidding me?! No! Thomas is my friend! I want to help him too! I'm going in with you guys!" (Y/n) said. "(Y/n), we'll take care of this. You should really stay here with Pops." Rigby said. "What is with you guys? I'm not afraid to get my hands dirty when it comes to helping my friends! I don't care how dangerous it is! I'm coming with you and that's final!" (Y/n) shouted. The duo look at each other worriedly, then sigh in defeat. "Fine, but stay close at all times, got it?" Mordecai asked firmly.

"Okay..." (Y/n) said. "Okey dokey! Lets get started!" Dr. Henry gets the shrinking machine out of his suit case. "The shrinking won't last forever, so take this alarm." Rigby puts on the alarm to his wrist. "When it goes off, you will grow back to normal size so move quick! You'll also need this." The doctor holds a small speck. "It's just a speck!" Rigby said. "Shh. It's what's inside the speck that counts.

It contains all the equipment to thaw the core including a transporter, which would bring you back, just push the red button and poof! You'll be back safe and sound." Dr. Henry puts the speck in the tube. "Now. In you go." He said. "Hmm! Hmm! Hmm! Hmm! Hmm!" They go in the shrinking machine. Dr. Henry presses the buttons to make them shrink. "Oh! I forgot to tell you. Shrinking is extremely painful." He said. "WHAT?!" (Y/n), Mordecai and Rigby scream from their regular voices into a miniature voice and go into the tube. "Remember, just five minutes to save Thomas and get out. Dr. Henry puts them in Thomas' head.

"Oh, Dr. Henry, what will happen if they don't make it in time?" Pops asked. "Well, it's hard to say Pops, yours comes to worst, they'll just take very long naps." He replied. "Ooh! I love long naps!" Pops chuckles. "That means they're going to die." Dr. Henry whispers to Skips, who's eyes widen. Inside of Thomas, (Y/n) Mordecai and Rigby are swimming to start looking for the core. Later, they all swim to the surface and breathe and get out of the stream and finally make it out to breathe and inside of Thomas everything is filled with snow in a blizzard. "So cold!" (Y/n) shivers.

"It's freezing!" Mordecai said. "I can't feel my fingers!" Rigby shouted. A goat sound is heard. "Dude, what's that!" The goat appears. "Mor-de-cai. Rig-by. (Y- n). Mor-de-" suddenly it has the voice of Thomas and his head and the trio scream. "Whoa, whoa, guys, guys it's me Thomas." Thomas said. "No way, dude. How can you be Thomas if we're inside your...uh. His head." Mordecai said. "I'm Thomas' Consciousness. Of course I'm in my own head." He replied.

"Hmm. I guess that makes sense." Rigby said. The area rumbles and (Y/n), Mordecai and Rigby scream. "Uhh, what was that?" (Y/n) asked. "The cool is making the brain unstable. It can't hold much longer like this." Thomas's consciousness said. "Do you know where the brain core is?" Mordecai asked. "Yeah, it's over there. Take a look." He took out a pair of binoculars and gave it to (Y/n) to let her see where the brain core is. She sees it surrounded by an igloo,

then sees a group of huskies gliding the sled while, he also sees the Cool Cubed and his translator going for the core. "Freeze! Freeze!" "Mush! Mush!" The translator shouted. "Dudes! The Cool Cubed is almost at the core! What are we gonna do!?" (Y/n) asked. "We're gonna stop that slushy!" All of them go in the shed where they see all the supplies they need. "Dr. Henry makes one heck of a house call!" Rigby shouted.

"This might be the transporter to take us back. It's too big to carry, we have to come back for it. Time to suit up." Mordecai said. The trio put on jackets, get matches, bow and arrows and more of the supplies then, put it in the vehicle and then got in. "Let's blow torch this sickle stand." (Y/n) said. They leave the shed. The Cool Cubed and his translator are still going to the core.

"Freeze! Freeze!" He notices them coming. "Freeze! Freeze! Freeze! Freeze!" He shouted. "Hmm.." the translator still keeps on going. "Hah!" He said. "Yeah! We got him!" Rigby shouted. They see a glacier and they try to avoid it. The four scream as more glaciers rise. They try to avoid the risen glaciers. Later, they are all close to each other but then (Y/n) turns the switch to go farther then the Cool Cubed.

"Freeze! Freeze!" The slushy shimmers then zaps the right caterpillar track of the snow vehicle then the other three fall off of it. "Freeze!" Cool Cubed and his translator come closer to them. "What's your problem man!?" Rigby snapped. "Freeze! Freeze! Freeze! Freeze!" "I am the coldest slushy in the world! I have a reputation to appalled, which means no area of this brain goes unfrozen!" His translator said. "Freeze! Freeze!" "Now you die!" Cool Cubed shimmers again and fires another beam. "No!" Thomas's consciousness jumps in the way of the freeze beam and gets hit. His whole body but head is covered in ice.

"Thomas!" (Y/n) shouted worriedly. She quickly ran over to him, then growls at the duo who attempted to attack them. "Freeze! Freeze! (translation) Finish him!" "Hahahahaha!" The translator laughs. "NO!" (Y/n) moves Thomas's consciousness out of the way when the translator was about to spear him but, ended up making a crack of the ground making him fall all the way down but the Cool Cubed still went for the core. "He's getting away!" (Y/n) shouted. "Hurry. Go, go!"

Thomas' consciousness shouted. "But, we can't just leave you here!" (Y/n) shouted worriedly. "Just. Stop the Cool Cubed." The ice begins to go all over his face. "No! Thomas...." (Y/n) said. "Come on!" Mordecai said. They all start running along to the core. "Freeze! Freeze! Freeze! Freeze! Freeze!" He begins to climb on the igloo where the core is. "Freeze! Freeze! Freeze! Freeze! Freeze!" (Y/n), Mordecai and Rigby pant while they climb and when the Cool Cubed was already in the top of the igloo,

he saw the core and was about to go in until Rigby pulled him in the leg. "Freeze! Freeze-" (Y/n) grunts. " Hold him up while I find the core!" She goes on Cool Cube. "Stay away from his brain hole." She punches Cool Cubed repeatedly. "You slush bag!" She shouted. When Mordecai saw the core too, he was about to put out the dynamite with the fire matches until,

the Cool Cubed noticed and pushed him to make the supplies fall in without warming the core up but fell close to the core. "Ugh..." Mordecai said in pain. Cool Cubed goes in to freeze the core. "FREEEZE!!" "He's gonna freeze the core!" Rigby shouted. "FREEEZE!!!" The Cool cubed is about to freeze it but, (Y/n) gets ready to warm it up by getting a bow and arrow. "Dude! What are you doing?!" Rigby asked.

"Doctor's orders." She shoots the arrow to the dynamite directly when the whole igloo starts to explode beating the Cool Cubed. When everything falls apart in the igloo, (Y/n), Mordecai and Rigby fall down while screaming but when they barely fall, the watch Rigby was given starts to blink when the 5 minutes were up and then Rigby's hand starts to grow. "Aah! Uh, dudes?" Rigby asked.

"We gotta get to the transporter!" (Y/n) shouted. The trio start to run while their jackets start to rip apart while they were growing more and more than all the snow and blizzard was going away, then all of a sudden, they all saw exactly the same spot where they first saw the transporter. "Find the transporter!" Rigby shouted. As he was told, Mordecai looks quickly for the transporter on the melted water.

"Dudes?!" Rigby asked, still growing. Mordecai sees the transporter and gets it. "I got it! I got it!" He shouted. "Press it! Press it!" (Y/n) shouted. Mordecai still grows too, while he attempts to press the button while they leave back to the real world. "Thomas?" (Y/n) asked. Thomas' eyes start to blink then he's finally awake with his normal face and he gasps. "Whoa! How did I do?! How did I do?!" He asked.

"Uh, Thomas? Your entire brain froze." (Y/n) said. "Yeah, you almost died!" Mordecai said. "Whoa, really?" He asked. "Yeah, but we were injected in your body and saved you!" Rigby said, and Thomas makes a visible face of disgust, causing (Y/n) to giggle. "Check out your pho-too!" Rigby said. "Your brain freeze photo was the best of its all Thomas!" Pops said. "Yeah it did!" Mordecai said. Everyone laughs while Thomas exams the photo of his brain freeze face. "Hahaha haha. Oh. Oww. Ow.." Thomas grabs his head. "Are you okay?" (Y/n) asked. "... I'm fine."