Darlison, Aleesah

When Willow breaks her leg, Ellabeth must step into the role of Head Unicorn Rider as the remaining three riders set off on a dangerous mission to obtain diamonds from the Dakkar serpent, who must give them up willingly--but Ellabeth is not sure she has the courage or judgment to lead the way, especially after she insults the serpent.

The Unicorn Riders are attending the Spring Tournament, but in addition to the pressure of competition they have been warned that someone may be trying to sabotage the contest, and it is up to them to prevent that from happening.

Head Rider Willow is sent on a mission to Arlen to bring a healing elixir to Lord Gildenfair, her uncle, whom she hates because she believes he ruined her family--but the Unicorn Riders arrive to find Arlen is under attack, and Willow must confront her past and find a way to save the city.

The Unicorn Riders are accompanying the Queen to the Council of Kingdoms, but when the magical Regal Conch is stolen it is their job to track down the thief, whom Quinn suspects is her recently discovered twin sister, and prevent it from falling into the hands of the evil Lord Valerian.

When four-year-old Prince Simon is kidnapped the Unicorn Riders are left with a trail of taunting riddles which only rider Quinn can solve, and which lead them not to the evil Lord Valerian, but to a father and twin sister that Quinn never knew she had.

Coming from a wealthy family, Krystal is finding it hard to adjust to the responsibility of being a Unicorn Rider, so when they arrive in the town of Miramar to investigate the disappearance of seven children, she changes out of her uniform and slips away to explore--and stumbles into a plot to capture the unicorns and their riders.

The ruler of Haartsfeld has died, and it is up to the Unicorn Riders to find his daughter and heir, the half-fairy Aveena, and bring her to her new kingdom before it falls prey to the wicked Duke Bowral--when the fairies demand a price from Krystal, but the real trouble is that Aveena does not want to leave her home in the fairy forest, and it is up to the Riders to convince her of her responsibility to her father's people.

When Willow breaks her leg, Ellabeth must step into the role of Head Unicorn Rider as the remaining three riders set off on a dangerous mission to obtain diamonds from the Dakkar serpent, who must give them up willingly.

When the kingdom is hit by unnaturally wild weather, Ellabeth and the other the Unicorn Riders find that the cause is a lost weather sprite called Lumi who has become separated from the retired wizard Kai Liang--but before they can take him home and calm the weather they must gather his four elements and defeat the boy Gelsan who works for the evil Lord Valerian.