Pinkie Pie is planning for her next party to throw for the welcoming of The Courageous Creative Crew. Meanwhile, Twilight and Spike are in her lab practicing science with Nancy, when all of a sudden, some of Twilight's chemicals spill all over her. Nancy starts to grow larger and larger, and before Twilight knows it, she's bigger than Torch. Nancy runs off embarrassed, and Twilight is appalled at what she's just done. She runs to Rainbow Dash for help, but she's no match for how enormous Nancy is. Kendall and the rest of her crew see her running away, and try to go after her, but worry for their safety. Rarity, Fluttershy, and Applejack approach them and ask what happened. As Twilight explains, Pinkie Pie comes hopping along merrily. "I must go into the woods, and find some berries for the Crew's cake!" She squeaks. "Alright Pinkie." Says Twilight. "But I'm going to attach a camera and microphone to your head, I want to do some research on what forest creatures do. I'm helping Fluttershy build up her confidence, by studying the animals. But be careful! There are monsters in that forest. I don't want you to get trapped." She states. "I Pinkie promise I will be careful!" Pinkie swears. "I'm going to make an anecdote for Nancy. Kendall, I want you and the crew to keep an eye on the video footage Pinkie brings in." Says Twilight as she and the rest walk back into her home.
The crew picks up some interesting video footage, but suddenly the day turns to almost dusk. The sky has suddenly turned a dark pink, like a sunset. "Pinkie, what happened?" Kendall questions. "I don't know!" Squeals Pinkie Pie. "All of a sudden, it got dark, and the forest got super squishy, and the air smells musty, and…" "Pinkie Pie! Calm down!" Kendall orders. "What does the rest of your setting look like?" She questions. "It looks like a cave, but there's teeth and a tongue!" Pinkie Pie shouts. "Pinkie Pie, you have to get out of there! That's not a cave!" Kendall orders. "But why? It's so fun, and my voice ECHOES!" Pinkie Pie whales. Suddenly the front of the cave starts to close, and Kendall loses signal with her. "Pinkie Pie?" "Pinkie Pie!" Kendall yells. "We have to go after her." Kendall orders. "I just finished the anecdote!" Twilight says relieved. The crew and the rest of the Mane six head into the forest. "How are we going to find Pinkie Pie, Kendall?" Shae questions. "Hmmm…" Kendall thinks, then looks down. "Look! Pinkie's footprints! We can follow those!" Kendall tells the rest, as they follow.
The footprints stop at something,(or someone) rather large. "It's Nancy! Pinkie must've walked into her mouth!" Exclaims Rainbow Dash. "We have to go in, and save her." Says Kendall. "Eww! No way!" Exclaim Rarity and Nathan. "Come on, it won't be that bad." Stevie reassures. "Nancy's an old lady, her mouth is gross!" Nathan cringes. "She's not old, she's middle aged!" Kaiser corrects. "Shut up, Kaiser! No one asked you!" Nathan shouts. "OK! Stop! Both of you! We're saving Pinkie Pie whether you like it or not, Nathan!" Kendall states. "She's also sleeping, so we'll have to wake her up." Kendall approaches Nancy slowly. "Nancy? Wake up, honey." Kendall whispers as she gently strokes her face. Nancy opens her mouth and yawns. "Let's go guys! Everybody in!" Kendall orders as the Crew and Mane Six run into Nancy's mouth.
She closes her mouth, and Fluttershy and Shae start to get scared. "It's dark, r...really really dark." Fluttershy shivers. "Kendall, I'm scared. Fluttershy is right. It's dark in here." Shae trembles. "It smells like an old basement, too. Pinkie Pie was right. It's really musty. You know, Shae. If you reminded your mom to brush after a steak dinner, which may I remind you she had last night, we wouldn't be struggling to breathe." Says Nathan. "What are you trying to say!?" Shae argues. "Your mom's breath is really bad." Nathan sneers. "Heeeeey! Don't talk about her like that! She brushes her teeth!" Shae whines. "The smell says otherwise." Nathan jeers. "Nathan! Enough!" Kendall barks. "Come on! Let's go find Pinkie Pie." They walk towards the back of Nancy's tongue, and start down her throat. It's steep and slippery, so they try to be careful. Kaiser slips, and he's the last one in line, he knocks everybody else down with him until they make a big splat in Nancy's stomach. "I'll kick your ass, Kaiser!" Nathan shouts as he chases him around the area. "Nathan! Stop!" Kendall orders. "Help us look for Pinkie Pie!" They walk around, and see a light in the distance. They follow it, to find Pinkie Pie taking videos, she got the camera to work again. "Pinkie! We found you!" Exclaims Applejack. "This is so exciting! I'm the first pony in Equestria to get video footage inside somebody's stomach!" She shouts excitedly. "Right, but I think we should get out of here before we become Nancy's breakfast!" Kendall explains. They start to carefully climb up her throat. Once they reach her mouth, they realize her mouth is closed tight. "Uh oh! Nancy's mouth is closed! What are we going to do?" Worries Twilight. "Don't worry. I have an idea!" Nathan says as he walks to the back of Nancy's throat. "What are you doing, Nathan?" Kendall questions. He opens the buckle of his belt and pulls out a feather. He tickles Nancy's uvula. "Tickle tickle tickle!" He says trying to get her to budge. She awakens and sneezes. The Crew and Mane six fly out and hit a tree.
"My mane! Her saliva messed up my mane! I just got this done this morning!" Rarity whales. "Believing your looks matter that much will attract the wrong individuals. Just sayin'" Nathan fires back. Rarity turns her nose at him and ignores everything he says. Nancy looks down at them confused. "Here Nancy, drink this. It will make you smaller again." Twilight reassures. She takes the anecdote, and shrinks back to her normal size. "How did this happen?" Nancy questions. "It's a long story." Says Kendall. "Let's just get you back to equestria and get you a real meal."