Having jumped into the fantasy land of Luster, Cara joins Lightfoot the unicorn in the search for Queen Arabella Skydancer.

Seeking to unravel the secret of the long enmity between unicorns and delvers, Cara travels through a strange underground world to the court of the centaur king, while on Earth, Beloved and her hunters make final plans to jump to the fantasy land of Luster and drive the unicorns to extinction.

When Professor Fauna spots a unicorn horn mounted on the wall of the Schmoke Brothers' living room, the Unicorn Rescue Society heads to the Himalayan mountains of Northern Pakistan to finally see a unicorn themselves.

When Claire and Sophie journey to Stonehaven, where Claire can be trained to use her Gemmer abilities to awaken the unicorns, Sophie discovers they are in great danger.

As Beloved and her Hunters begin the final hunt for the unicorns by ripping through the Axis Mundi into Luster, the magical world begins to collapse from the wound and Cara seeks the help of Graumag the dragon and other friends across Luster for a final and decisive confrontation with the Hunters.

When Sam arrives in Foggy Harbor, all she can see is a small, boring town that is way too far from home, but when Sam discovers a hidden trapdoor leading to a room full of strange artifacts, she realizes Foggy Harbor is not as sleepy as it seems.

Phoebe and Marigold deal with trouble at school, messy rooms, and a case of "Sparkle Fever," before returning to Camp Wolfgang where Sue and Ringo remind them why being weird is so much fun.

As Skandar and his friends enter their second year at the Eyrie, wild unicorns are being killed and terrible storms threaten the Island, while meanwhile Skandar is determined to help his sister, Kenna, join him.

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

Pip Bartlett has a way with the magical creatures at his Aunt Emma's clinic, but an extremely timid unicorn named Regent Maximus is testing even his abilities--particularly since it is Pip's assignment to get Regent ready for the Triple Trident show for magical animals where, to make matters worse, somebody is trying to win by sabotaging the other contestants.