Children are disappearing from the town of Miramar, and the Unicorn Riders are sent to investigate. But Krystal is beginning to struggle with the responsibility of being a Rider. When the leader of a group of entertainers offers her a life of glamour and fun, Krystal must make a choice-will she give up being a Rider? And will her decision put the other Riders and their mission to save the missing children at risk?

Head Rider Willow must confront her past when the Unicorn Riders travel to Arlen to deliver a healing elixir to her dying uncle-an uncle she hasn't spoken to in years. But when old friendships are betrayed and the town is attacked, the Riders and their unicorns must help the townspeople. Can Willow find the courage to forgive her uncle for past wrongs and help him save Arlen?

Queen Heart's young son has been kidnapped. Now it's up to the Unicorn Riders to rescue him, but the only clue is a trial of taunting riddles left by the abductors. Will Quinn be able to solve the perplexing puzzles and lead the other Riders to the prince before it's too late?

Zach Lopez has just moved to Devils' Pass and is missing California already. When he meets Tiffany, Jeff, and Evie in his new school, they tell him the town isn't what it seems and that strange things happen there. Zach isn't buying it-until he sees a glimpse of a white horse with a horn and a mane full of glitter. Could it really be a unicorn? Soon, Zach finds that his new friends were telling him the truth-and more. They have to save the town from...

Valerio the dragon and Allegra the unicorn are driven into hiding when humans begin to destroy the natural beauty of their land, but they receive hope when they befriend the daughter of the man responsible.

"Can you catch the unicorn? You'll have to use your brain. So set your traps and prep your team to pet that rainbow mane!"--

The unicorns are celebrating their favorite day of the year, complete with rainbows and sparkly butterflies, but when an impostor (a horse with a fake horn) arrives, will the party continue with all its glittery glory?

When sisters Even and Odd are trapped and unable to return home to the mundane world they live in, they, with the help of a unicorn named Jeremy, must stop a power-mad wizard from creating an ecological disaster.

Having been used by the King to trick a unicorn into imprisonment, Zoe decides to set him free again.