Excited to receive a pet unicorn on her eighth birthday, Princess Bella worries because her friends are fighting and her parents seem to be hiding something, which Bella fears might mean that she won't get the unicorn of her dreams.

It all started when Phoebe skipped a rock across a pond and accidentally hit a unicorn in the face. Improbably, this led to Phoebe being granted one wish, and using it to make the unicorn, Marigold Heavenly Nostrils, her obligational best friend. But can a vain mythical beast and a nine-year-old daydreamer really forge a connection?

An earthquake shakes Zoey's house. Or maybe it's a unicorn-quake? An enormous new friend arrives in a lot of pain, and it's getting worse every day. Zoey must work with her mom and Sassafras to find a cure--and quickly!

Kitty helps her best friend Unicorn accomplish his dream of being a mermaid, but despite an elaborate DIY mermaid tail, the friends' trip to the beach does not go as planned and Unicorn's insecurities ermerge.

Kitty is excited to throw a kitty-corn party but becomes frustrated when newcomer Puppy messes up the decorations, ruins the gift Kitty made, and worst of all, he takes up all of Unicorn's attention.

Despite disagreements on the wisdom of the adventure, Rainbow Tinseltail and the other unicorns set out for Snowbelle Mountain to find out if Yetis are real--and when they get caught in a blizzard and take shelter in a cave they find the answer to their quest.

When she and Molly are ready to go to the fair, Pinkalicious worries that she won't have a good time because she can't seem to find her unicorn, Goldie.

"When Layla arrives for her first day of school at Unicornia, the school for unicorns, she realizes that she's not like the other kids there. They're all pastel colors and know the rules to Horn Ball and none of them come from the Woods like Layla does. Try as she might to make friends, Layla's just...different. But when her class gets lost during a field trip to the Fiddle Dee Deep Forest, it's up to Layla to step up and save the day"--

Lucy and Sparkle are excited to carve their Halloween pumpkins, but things suddenly take a spooky turn.

Iris and Ruby go to look for their unicorn Heartsong after she went to the Fairy Forest to have her foal but never came back.