Gwenevere (Starla) is about to follow in the footsteps of her friends Tamara and Fallon as a Jewel Rider: the time has come for her to receive the special Enchanted Jewel, the Sun Stone, in the traditional Friendship Ring ceremony. Gwen's evil aunt, Lady Kale, plans to control Merlin's seven Crown Jewels of the Kingdom that hold powerful magic and rule Avalon forever. Kale finds the mighty Dark Stone and sends Merlin into the hidden realms of Wild Magic. She steals the magical Jewel Box where the Crown Jewels are kept. Kale also captures the winged unicorn named Sunstar, but the Jewel Riders are able to secure the key to the Jewel Box.
Princess Gwenevere and the Jewel Riders, aided by their male counterparts, The Pack, embark on a rescue mission to save Sunstar from Lady Kale's Thornwood Castle. Kale demands the key to the Jewel Box in exchange for the captive unicorn, but Merlin at last moment uses his remaining powers to scatter the Seven Crown Jewels to their original lands and the Jewel Riders manage to set Sunstar free. In order to become a Jewel Rider, Gwenevere enters the revered Circle of Friendship to bond with Sunstar as her magical animal, sharing the Sun Stone with her. But with the Crown Jewels gone from Merlin's Jewel Box, the Wild Magic in Avalon is no longer stable and a great quest to recover the lost Crown Jewels begins.
Tamara is caught in an enchantment when she plays a beautiful harp given to her for a performance at a craft fair. The music of the harp leads Tamara to Rainbow Falls in the Riverdells where the Rainbow Jewel has returned. Gwenevere and Fallon embark on the quest to save Tamara from going into weird trances and to find the Rainbow Jewel before Lady Kale does, and learn what happened to the jewel upon returning to the land.
Trying to ride the Wild Magic by themselves for the first time, Gwen and Sunstar get pulled off course and discover that the Travel Trees, which are used to "ride" the Wild Magic, are being affected as well. It has become very tricky to ride the magic, as they learn when they become separated from the Jewel Riders and must track down the source of a Wild Magic outbreak in the Great Northwoods. The Travel Trees have a crown jewel stuck in their portal and they are disappointed at not being able to dance, so they create a Wild Magic dance floor for all the forest animals. However, Lady Kale has followed them and she steals Gwen's dance partner and captures the Jewel of the Great Northwoods. The Jewel Riders discover that Jewel is being used for evil and fight to reclaim it.
The Jewel Riders and the Pack go on a quest to the Crystal Cliffs to find an ancient mountain called Wizard's Peak and recover the Crown Jewel of Burning Ice. After an ambush by Lady Kale, they separate into two groups; Fallon and the Pack lure Kale away but Gwen and Drake soon find themselves trapped in a labyrinth of ice caverns. Trying to locate the jewel, the Jewel Riders find instead the magical genie Guardian intent on protecting the magical treasures of the ancient Wizards.
A faery, named Wisp, Faery King Odeon's daughter, goes after her lost flock of magic sheep. The sheep became affected by the Wild Magic, turning into "biker-sheeps" through a rainbow passage to the Great Deserts of Avalon. Wisp gets lost following them and needs help to find her way home, when coming across the Travel Trees that took her to Crystal Palace where she meets the Jewel Riders. The Jewel Riders head for the Great Deserts where they discover a secret passage into Faeryland, but Lady Kale has arrived first and decided this is a perfect new kingdom for her to rule. The Jewel Riders, with the help of the Faery Princess, must discover the Desert Star Crown Jewel and save Faeryland from Kale, but the problem is that it is an alternate dimension where magic works differently.
The Pack finds a rhyming entertaining troll in the Misty Moors with the Misty Rose Crown Jewel. The troll uses it to turn the Pack into frogs and their wolves into lizards. Frog Josh escapes and contacts the Jewel Riders who must rescue the boys and recover the jewel. Gwen, Fallon and Tamara must figure out the answers to the riddles of the troll in order to rescue the boys. However a talking swan waddles off with the Misty Rose Crown Jewel, unaware of the Wild Magic havoc it was causing on its trail. The Jewel Riders chase after the swan to recover the jewel and restore the Misty Moors to normal, including the true forms of the troll and swan.
Fallon with Moondance just won a race against the Pack when Tamara informs her that the riders are to go with the princess to a party celerbrating a newborn. Fallon did not wish to leave the Pack's training games for the party that caused a heated argument between her and Gwen. Gwen, Fallon and Tamara must outwit Kale and a band of outlaws as the Jewel Riders escort a trading caravan through a canyon across the Badlands to the party at Castle Greenwood. In the caravan are Fallon’s parents who disapprove of her being a Jewel Rider, leading Fallon to hate Gwen for forcing her to see them again. Later on, when Gwen needs help, Fallon puts aside her anger and saves Gwen. Rescuing Gwen and protecting the caravan, Fallon proves to her parents that she excels as a Jewel Rider and her parents come to accept her choice.
Tamara is called by her parents to Heartland Animal Farm to examine a legendary magical animal recently discovered, a Prism Fox. However, Lady Kale hears the news and now she desires the Prism Fox as one of her magic animals. Using enchanted bagpipes and other instruments, she plays a song to lure away all the animals from the farm, only to discover that her prize is just a baby Prism Fox named Kit. Tamara and friends use their own music and magic to defeat Kale and bring the animals back home. Kit also gets reunited with her parents where they all return home in the Wild Magic.
Drake finds the talking Magic Sword of Garmondale in a tree at a carnival. Hungry for magic from the Enchanted Jewels of the Jewel Riders, the sword promises Drake that women will now fall madly in love with him. With the sword as his love coach, Drake tries some unusual magic love poems out on each of the Jewel Riders. The girls, sensing a trick, turn the tables on Drake by pretending to go along with "his" ruse. As the sword drains away the riders' magic, the girls and Drake outwit the sword, forcing it back to its original state.
Gwen runs off into the Dreamfields of the Great Plains when she becomes bored with her date with Drake. There, she becomes caught in a battle of dreams with Lady Kale who is also trying to find the Crown Jewel. In a wild dream, Kale switches Gwen’s Sun Stone with her Dark Stone and thus a dream world is created in which Gwenevere has become evil, and her aunt has become good. Using the power of the Crown Jewel of the Dreamfields, the two must discover who they really are before it is too late, and Gwen must rely on her friends to help her fight the nightmares of the Dark Stone.
Just when the Jewel Riders try to find the last Crown Jewel and complete the magic of Merlin’s Jewel Box, Lady Kale disguises herself as Queen Anya and sneaks into the Crystal Palace, where she seizes the Jewel Keep and with it the Jewel Box, as well all the magic jewels stored there. Using their powers to create a dangerous "antimagic" device, Kale time-freezes all of New Camelot. When the Jewel Riders find the final Jewel, Kale magically transports it into her hands and strips them of their powers. The girls are helpless to stop Kale from proclaiming herself the new Queen of Avalon.
With Avalon cast in darkness, the Jewel Riders refuse to give up and return to the Friendship Ring to perform the Circle of Friendship ceremony again. Then with their jewels recharged, they enter the Wild Magic to find Merlin, led by their friend Kit the Prism Fox and other special creatures called magic gliders. Merlin reveals that the Crystal Palace itself is an Enchanted Jewel with great powers of goodness, but then Kale also finds him. While he battles Kale in the Wild Magic over the control of the key to the Jewel Box, the girls use Merlin’s Jewel box to release the magic of the Crystal Palace and restore Avalon. Lady Kale is destroyed, but to achieve this, Merlin has sacrificed his magic jewel and he cannot come back.
The Jewel Riders learn about the newly enhanced magic of their Enchanted Jewels and of a new quest to find the special Wizard Jewels that can give Merlin back his magical powers and return him home. Meanwhile, in the Wild Magic, the ancient wizard Morgana finds her Dark Stone, but realizes that she can not control it because it has been tuned to Lady Kale, who has materialized along with it, so Morgana makes a deal with her to work with her against the Jewel Riders and retrieve the powerful Wizard Jewels. The Jewel Riders return to the Hall of Wizards at the Wizard Peak, where they face Morgana's powers for the first time.
Using maps found in Merlin’s cottage, the Jewel Riders ride the Wild Magic looking for Wizard Jewels. However the Travel Trees cannot handle their new magic and they must travel through the Wild Magic on their own. Tamara finds a place that registers strong magic and the Jewel Riders head there with Magic gliders as their guides. But Morgana has set a trap that send Gwen, Sunstar, Fallon, Moondance and Archie to a place where Morgana can steal the magic of their Enchanted Jewels. Tamara is sent to another place in the Wild Magic where she makes friends with a frightened magical zebracorn named Shadowsong, who was self-conscious about his appearance. Tamara and Shadowsong form a strong bond and must go to the rescue of the other Jewel Riders before Morgana can steal their magic.
It is high fashion and high-jinx as the annual charity fashion show opens at the Crystal Palace fairgrounds. It is Queen Anya’s birthday and King Jared wants to surprise her with a new dress. When he assigns Gwen and Sunstar to handle the “secret mission”, the Princess manages to get Fallon, Moondance, Tamara and Tamara’s baby animals involved in a comedy of errors as each girl and animal tries to complete the mission. Meanwhile, Lady Kale sneaks into the show, creating a style-shifting dress too magical for Gwen to resist. When Gwen puts the dress on, she falls under a spell that the Jewel Riders must break before Gwen leads her evil aunt into the Jewel Keep.
In the magical gardens of Gardenia, a gardener gnome fools the Jewel Riders into thinking that he is one of the Great Wizards from Avalon’s past, and capable of great magic. The gnome has the ability to sculpt magical topiary animals that transform into crystal creatures. When the Jewel Riders discover that the gnome is not what he appears to be (actually just a wizard’s apprentice), they convince the gnome to help them retrieve a powerful Wizard Jewel from a dangerous place called the Sorcerer’s Playground before Lady Kale and Morgana can get it.
The Jewel Riders journey to the enchanted lands of the unicorns to learn about the mysterious secret of their magic. The unicorns, the most magical animals in Avalon, are in danger. The unicorn Queen is missing, kidnapped by Morgana in her quest to obtain the Unicorn Wizard Jewel. Moondance, daughter of the Queen, must go to the magical place and perform a series of tests to determine whether she should become the new unicorn's Queen. This would mean that Moondance can no longer be with the Jewel Riders and leave Fallon. Moondance must choose whether her loyalties are with the unicorns or with her best friend, Fallon.
While searching for wonderous Faery Wraiths in the Forest of Arden, Princess Gwenevere finds romance and magic with a strange boy named Ian. Hearing Gwen’s cry for help, Ian rescues the Princess from a marsh mire. However, the young man does not reveal to the Princess the wondrous magic jewel he has recently found. The jewel has enabled him to transform from a beast to a human boy. Now that he has met Gwen, he is worried that if he gives the jewel away, he will remain a beast forever and lose her love. He must decide what to do because Lady Kale has offered him the chance to remain human forever, if he gives her the magic jewel. When Ian rejects Kale's offer in order to save Gwen, the princess convinces the beast boy that no matter what shape he takes, she will always be his friend.
Gwen and Drake get lost in the misty walls that surround Avalon and discover a new magical but dangerous place outside the borders of the kingdom. Lost, they must work together to unravel a riddle told to them by the Travel Trees. Gwen and Drake must search for a magic wishing jewel that will turn this land to goodness and extend the borders of Avalon before the Wild Magic causes this place to vanish completely. Each discover half of the Wishing Jewel, but they can not figure out why it does not work quite right until they realize that neither of them have the entire jewel so they must work together in order to reassemble its pieces.
A fortune teller named Esmerelda and her mysterious cat use the Fortune Jewel to tell people’s fortunes. When the Jewel Riders have their fortunes read, a dark future is revealed to Gwenevere that tells of the fall of the Crystal Palace and the rise of Morgana to rule Avalon. Gwen and her friends must get this magic jewel to the Jewel Keep and out of Lady Kale's and Morgana’s hands. However, when they fall into a magical trap of Kale, the cat's secret is revealed, being really the ancient wizard Derreck who has lost his human form when he was tricked by Morgana. Will Esmerelda and her cat decide to give the jewel to the Riders, or to Morgana?
Three mischievous trolls find new Enchanted Jewels in the Wild Magic and to energize it, they steal elf magic from the Elf Woods. The Jewel Riders ride into town and look for a Western-style showdown with the trolls to save the elves.
The Wild Magic gliders tell the Jewel Riders a creature is crying from somewhere in the Wild Magic and Tamara convinces the Jewel Riders to go and rescue it. The girls ride into the Wild Magic and discover a “lost island”. But their enemies have also found this island and are looking for magical Wizard Jewel. Morgana sends Kale to follow them. The Jewel Riders find a giant creature who, amazingly, only responds to the baby animals. It is up to Cleo, Sugar and Spike to save the day.
A fortune teller named Esmerelda and her mysterious cat use the Fortune Jewel to tell people’s fortunes. When the Jewel Riders have their fortunes read, a dark future is revealed to Gwenevere that tells of the fall of the Crystal Palace and the rise of Morgana to rule Avalon. Gwen and her friends must get this magic jewel to the Jewel Keep and out of Lady Kale's and Morgana’s hands. However, when they fall into a magical trap of Kale, the cat's secret is revealed, being really the ancient wizard Derreck who has lost his human form when he was tricked by Morgana. Will Esmerelda and her cat decide to give the jewel to the Riders, or to Morgana?
Determined to prevent the prophecy of the Fortune Jewel from coming true, the Jewel Riders travel to the Heart of Avalon to seek out the wisdom of the Lady of the Lake. For this they need the help of the Grandfather Travel Tree, the only one who can send them where they need to go; Lady Kale and Morgana get there first, nearly destroying the tree. Luckily the Riders are able to heal it, and the girls go through its magic tunnel to the shore of the mysterious Isle of Myst, where they are ambushed by Kale and Morgana who turn almost everyone to stone. Only Gwenevere and Sunstar escape across a magical lake, where she is given the magic Staff of Avalon and instructed go to the center of the Wild Magic, where she would merge the Wizard Jewels into a new magical jewel for Merlin. With help by Ian, Gwen triumphs in the final showdown against Kale, who gets herself turned to stone, and restores her friends. But Morgana steals the Wizard Jewels and heads to the center of the Wild Magic first.
Princess Gwenevere and the Jewel Riders journey to the center of the Wild Magic, where they confront Morgana for the control of the magic of Avalon. Morgana is trying to forge the Wizard Jewels together and create the One Jewel that will control all of the wild magic. The final showdown begins as the Jewel Riders battle Morgana in a series of magical events to determine the future of Avalon and the fate of Merlin. The Riders are winning when disaster strikes and Ian sacrifices himself to save Sunstar's life. Can Gwen pull herself together enough to create the One Jewel and save Avalon?
