Pheobe and her unicorn question the idea of "coolness," gain a deeper appreciation for the power of friendship, and avoid doing the summer reading assignments.

Phoebe, Marigold, and Marigold's sister, Florence Unfortunate Nostrils, are headed to summer drama camp where they'll face the daunting tasks of writing, producing, and acting in an entirely original play.

A collection of stories featuring Phoebe and her unicorn best friend Marigold finds the pair bowling, visiting the exclusive Camp Shimmerhorn, and writing songs.

"When your best friend is a unicorn, every day is a stroll down the red carpet. Phoebe Howell's unicorn BFF, Marigold Heavenly Nostrils, is happy to provide the celebrity treatment -- teaching Phoebe fancy new spells, giving her a ride to school so she doesn't have to ride the bus, and even negotiating with the tooth fairy on her behalf. But when Phoebe starts noticing that unicorns have become a trendy fashion statement, she doesn't feel quite so...

"Best friends Phoebe Howell and Marigold Heavenly Nostrils march to their own beat, but life isn't all rainbows and unicorns. With so many problems in the world and drama at school, Phoebe wonders why unicorns aren't in charge instead of humans. With Marigold, each day is full of magic, from introducing Phoebe to unicorn music to crashing a goblin popularity contest, and even tracking down long-lost family members like Infernus, the Unicorn of Death...

Phoebe and her best friend Marigold, a unicorn, embark on a series of adventures during their summer break, before returning to school where they deal with dodge ball, rescue Dakota from goblins, and briefly gain popularity.

Being best friends with a unicorn is truly incredible, as 10-year-old Phoebe Howell knows from experience. But what would it be like to actually trade places with a magical unicorn for a day? As it turns out, it's much harder than it looks! Phoebe's botched muffin spell turns the sky plaid. And things aren't any easier for Marigold Heavenly Nostrils, who has no idea how to hold a pencil. The friends also meet a three-eyed flying creature named Glorpie...

"A new school year means many things for nine-year-old Phoebe Howell and her unicorn best friend, Marigold Heavenly Nostrils. They prepare for a school dance (lame!), meet new friends (ghosts and gnomes and goblins, OH MY!), and even experience a rare supernatural phenomenon called a Unicornado! In fact, sometimes things get almost too magical. Marigold's presence attracts pixies, talking birds, and a sphinx, turning Phoebe's house into a magical...