Thirteen-year-old Skandar Smith has always wanted to be a Unicorn rider, but when the mysterious Weaver steals the most powerful unicorn in the world, Skandar must face sky battles, ancient secrets, and bloodthirsty unicorns in order to save his island.

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.

With his unicorn characteristics disguised beneath the beautiful armor created by Joseph Lequire, Moonsilver accompanies Heart on the journey to the place where Lord Irmaedith's men have taken the gypsies.

Uni the unicorn believes that little girls are real.

"Only a unicorn's horn can purify the water in your medieval village, so you set off to find one. Can you solve the town riddle and find the sorceress? Does a unicorn reside in the forest? A fire-breathing dragon, angry warlock, and powerful wood-witch all stand in your path"--

A princess without a playmate tries to capture a unicorn with tricks and pouts, but finds that friendliness and patience are more effective.

A grumpy goblin hates having unicorns as neighbors, but when dragons threaten his home and the unicorns come to the rescue, he has to admit that maybe unicorns are not so bad after all.

Rainbow Tinseltail and the other students at Sparklegrove School for Unicorns are excited when a brand new unicorn, Sunny Huckleberry, enters the school, but Sunny does not know what his special magical power is, and the thought that he might not have any power at all is making him unhappy; Rainbow (whose power is granting wishes) is eager to help him--even though he does not seem to want her help.

Invites the reader to join top unicorn scientists as they clear up the myths and misconceptions people have about these majestic creatures and their abilities.