As each chime sounds, Cara climbs faster up the steep bell tower. When the bell chimes twelve, she must be on top of the roof so she can jump off and into Luster, land of the unicorns. With her new friends, they set out to reach the Unicorn Queen before the mysterious man who is following them does--to prevent the destruction of all the unicorns forever.

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.

In Luster, the world of the unicorns, a strange new menace arises! Beloved, the great enemy of the unicorns, has stolen one of the Queen's Five, the powerful amulets that allow a human to enter Luster. By combining her own magic with that of the amulet, Beloved hopes to open a gate between the worlds—a gate that will allow her Hunters to launch a full scale invasion. At the same time Grimwold, Keeper of the Unicorn Chronicles, comes upon hints of...

As the Blood Moon rises, Beloved, the ancient and eternal enemy of the unicorns, launches her assault on Luster. But the very act of opening a passage between Earth and the world of the unicorns creates a danger more fearful and far-reaching than even Beloved could have imagined. The unicorns gathered at Autumngrove feel the intrusion the moment the worlds are linked. It tells them that the long-feared invasion has begun. Knowing that they will need...