When a thunderstorm forces Applejack and Rarity to seek shelter in her library, they're invited by Twilight Sparkle to have a slumber party. However, their clashing personalities and preferences may make it difficult for them to get along.

Rarity makes dresses for her friends for the upcoming Grand Galloping Gala, but they don't turn out to but what her friends expected. She strains herself catering to their demands, then learns her new dresses will be put on a fashion show.

During a visit from Princess Celestia, Fluttershy sees the Equestrian royal's sick pet bird Philomena. She secrets the poor creature home and tries to take care of it, but finds that the task to be harder than it looks.

Rainbow Dash holds a flying race to determine who will win the honor of being her pet.

Pinkie Pie takes on the task of babysitting the Cakes' twin toddlers but is woefully unprepared for the challenge.

When Spike and the Mane 6 end up as superheroes in a comic book world, the only way to get back home is to defeat the super-villain, The Mane-iac.