Resume: At the Canterlot Natural History Museum, Maud Pie gives a boring lecture about rocks. As the museum patrons become bored to tears, Pinkie Pie, Rarity, and Twilight Sparkle use their geode powers to give the lecture some pizzazz.

Fade to black from the title card, then in to a long shot of an exhibit hall in a museum, the camera tilting down slowly from the domed ceiling to floor level. The plants and animal specimens in display cases and wall frames indicate a focus on natural history. Two dinosaur skeletons are set up before a large model volcano and are fenced off by black/yellow-striped caution tape and scaffolding/ladder/crates, and a third model hangs from the ceiling. Maud Pie stands at a display case set up in front of the volcano to address a group of Canterlot High School students. Twilight Sparkle is among them, and Cheerilee has come along to chaperone this outing. Maud wears the same bluish-gray dress and black belt as her pony counterpart, along with dark gray hiking boots and short white socks. Two details of Cheerilee’s clothing have changed from her previous appearances. Instead of flowers, her skirt shows a pattern of zigzag stripes in two shades of green, and she has traded her brown boots in for light green knee-length socks and brown loafers set with daisies.

“Welcome to "Rock Talks with Maud."” Maud Pie said, Closer shot. “Are you ready for rocks?”

“Woo!” Students halfheartedly.

“Me too. I’m thrilled that you are here at the Canterlot Natural History Museum to learn about rocks, minerals, fossils, and last but not least, landforms.”

Cut to her perspective during this last sentence, panning slowly across the group. Most of them look as if they would rather have their teeth drilled, including the Cutie Mark Crusaders. Sweetie Belle dozes off with a snore, but jerks awake just in time to avoid being caught out and earns an irritated eye roll from Scootaloo. The only ones showing any real enthusiasm are Twilight, Pinkie Pie, Rarity, and Cheerilee, and the three girls are dressed in everyday outfits different from their previous threads. All are framed from the knees up. Twilight: blue blouse with short sleeves; dark pink vest with a matching bow tie from her magical pendant on its knot; purple skirt with slightly lighter purple stars; a repeating cutie-mark/star pattern and a lighter purple frill at the hem. Pinkie: sleeveless white top with her three-balloon mark, three-layer ruffled skirt whose pink hue darkens from one layer to the next; white tights; blue hair band, pendant around neck. Rarity: sleeveless blue dress with pale yellow collar trim set with gems and the stone from her pendant; short flared hem with rows of embroidered jewels running down from the waist; longer purple skirt underneath this; gold bracelet on each wrist; blue three-gem hair clip; jeweled blue belt. After Maud finishes speaking, the camera cuts back to her.

“As you can see, our display is currently undergoing some metamorphic changes.” Maud gestures to one side.

Cut to the dinosaur skeletons on the end of this, then back to her after one skull falls off and clatters down to the fake grass.

“It’s been rocky getting this new one off the ground, and we’re all feeling…” Long pause. “…the pressure.” Her perspective of the apathetic observers.” That’s a little rock business humor for you.” One girl yawns. “Ha-ha.”

A boy keels over asleep; now Pinkie leans into view to give a thumbs-up. This motion exposes a blue bow set with a heart and attached to her hair band on the side previously obscured by her curls.

“Good one, Maud!” Pinkie Pie laughs and zip away; back to Maud.

“Thank you.” Maud said to your younger sister, Pinkie. “Minerals are classified as naturally occurring substances formed in a geological process.”

Cut to Lyra Heartstrings and a boy on this line—both bored out of their gourds—then to just behind the monotonic speaker. Zoom in slowly on Twilight and company; Sweetie nods off again. The girls’ footwear is now visible: sky-blue knee-high socks and purple Mary Jane shoes for Twilight, heart-trimmed sandals with pink straps and stacked blue soles for Pinkie, purple pumps with translucent high heels and blue gem accents for Rarity.

“They feature a crystalline structure in addition to specific physical properties—” Rarity jolts Sweetie awake with a hip-check. “—and chemical composition.” Close-up. ”Now for something really fun. I will point to the sedimentary rocks.” Indicating various samples in the case behind her. “There. And there.”

Close-up of one stone.

Maud from o.s., pointing to it. “There.” The bored students. “That one.” Apple Bloom. “There.” To her again. “And there. That one. There. Look over there. That one.”

The next three lines are spoken over the end of the preceding one.

“Ready for what we planned with Maud?” Pinkie speaks softly.

“Mmm-hmm.” Twilight nods.

Let’s do it!” Rarity said and Pinkie whisks Twilight away.

“Thanks to the rock cycle—” Close-up of Rarity; Maud continues o.s. “—we also have these gems.”

Putting one hand to her collar, the purple-haired girl conjures up a quartet of pale blue crystals and projects them ahead of herself.

Maud from o.s. “Friction heats up rocks.” They form a slowly rotating circle in front of the case. “Baked rock doesn’t melt. It forms them into crystals.”

She has not notice the added bit of special effects, and she not even notice that her dark-green dress was getting snagged on some debris little by little on her back by the quartet pale blue crystals, which is going on behind her head, but her audience certainly has.

“Whoa!” Students aweds.

Maud from o.s. “But all of it starts with hot magma—” Tilt up to follow the crystals’ drifting flight along with Maud's dress debris toward the caldera of the volcano, putting her out of view; they end up in a hover, with that, her dress gets shorter until it shows her black bra. “—rising to the crust through volcanic pipes.” They drop in; next Pinkie rises into view, dumps a bucketful of material after them, and heaves the empty over her shoulder. “You might know it as lava.”

Her younger sister, Pinkie Pie plucks a small object from her hair and drops it in, setting off a mighty tremor and an intense pink glow within the caldera—the upshot of her power to weaponize anything sweet. She ducks away just before the volcano emits a blast of pink smoke and a cloud of vividly colored sparks, both of which bring laughs and excited noises from the crowd. Only now does Maud take notice of the light show.

“Magma-nificent. And the process of fossilization—” Cut to Twilight; she continues o.s. as Pinkie whips over. “—is the reason we have these dinosaur bones.” Twilight fires up her pendant. “Imagine, if you will—”

Cut to the two skeletons. As she continues, the bespectacled girl’s telekinesis reattaches the fallen skull and makes them fight, tearing through the caution tape.

“—that these colossal prehistoric beasts are walking through the museum right now.”

On the end of this, cut to her audience, now voicing their very great enjoyment of the throwdown. The camera then returns to the skeletons as Twilight’s power brings them to a halt.

“Look at that.” Tilt down to her. “You don’t have to imagine.” Pause. “Dino-mite.”

Applause and plenty of cell phone picture-taking; pan from the group and stop on Rarity standing apart from them. Twilight and Pinkie cross to her, the latter giving a wave to Maud and her dress unraveled. A young girl, her straight dark hair covered by a hard hat fitted with a headlamp, runs up to the geology buff. She speaks with a slight speech impediment that turns her R’s into W’s.

“As a proud member of the Maud Squad, I just wanted to ask—” Girl pulling out/holding up a book. “—will you sign my geology book?”

The camera is now close enough to pick out the button she wears on her overall shorts: a stylized drawing of Maud’s straight hair and emotionless face with hearts in place of eyes. Maud takes the book, fishes a pen from a pocket, clicks it, and gets to work signing the cover, and then suddely, Maud's dark-green dress with a black belt wrapped around her waist, bra, panties, white socks and black boots explodes thanks to Pinkie's blast of pink smoke and a cloud of vividly colored sparks, Maud Pie was now completely barefooted and naked with nothing on anymore. Her pink sister voices a sotto-voce laugh to Twilight and Rarity.

“Look at Maud! She’s ecstatic! Even she's bare naked now!” Pinkie said.

But the mouth shifts not a whit from its unsmiling set and the blue-green eyes blink at an almost-glacial pace. Twilight is left at a loss as to how the grinning Pinkie has been able to draw this conclusion, but Rarity gives her a “just roll with it” smile and shrug. “Iris out” to black, centered on the trio.