Twilight discovers a strange comet headed right for Equestria, making her freak out; Fluttershy wants a good bit of footage for the news, and teams up with Pinkie for some crystal capturing.
With the comet approaching, Rarity throws a festival to watch its arrival, but it keeps being late; Rarity plans to give everyone at the festival special glasses to see the full colors of the comet, but has trouble finding them.
A mysterious balloon-like object emerges and brings with it many bubbles, making the Mane 6 speculate on what could be inside; a magical artifact from one of the bubbles forces ponies to tell the truth.
Applejack finds a new plant friend that's a lot of trouble to care for; Spike finds a bubble wand which makes bubbles that don't seem to want to pop, even with the mane 6 inside.
The mane 6 decide to put objects representing their friendship in a time capsule; Applejack and Rarity are stuck in the old cowpony days, and must prove they're worthy of AJ's hat to return.
Twilight and Rainbow Dash find themselves in a futuristic world of mecha ponies, and try to get Fluttershy back from them; the mane 6 return to the present day, but not their own world.
Rarity is gearing up for her 100th episode of her livestream show with help from their new wild and funny friend Echo. / The portal between Equestria and the Wild Side is closing, and Rainbow Dash gets stuck in it.
At Cadance's festival, the Mane 6 minus Rarity get amazing "updos" (mane hairdos), but Rarity feels left out; later, they all enjoy the festivities, but a few texts get misinterpreted.
Fluttershy wants to make her premiere as the clown "Lolly-pop" at the festival, but Applejack is scared of clowns; a fortune-telling machine tells Dash to keep moving, so she joins the circus, but finds it harder than she expected.
The Mane 6 try to put together a show for the Wild Siders, but can't agree on what to do in it; while preparing for the Mane 6 play, Rarity gets a star-studded offer for a role across the street, but finds trouble making time for both.
Before the big play, the Mane 6 try to have a de-stress ball to avoid stage fright, but it's easier said than done; during the big play, things go wrong as magic seems to mess with the props and stage itself, and the Mane 6 try to adapt.
There's chaos magic ahoof, and Rarity investigates to figure out who's responsible; the Mane 6 confront Discord about stealing their wishes, but realize they need to get inside his head.
The Mane 6 decide to throw a surprise party for Discord to get him to wish everything back to normal, but they run into some problems; Discord's wish interacts badly with the Wild Side magic and makes freaky things start happening.