One day Saga runs across a starving season fairy and feeds it a waffle. Saga learns Sugar is an apprentice season fairy who is able to change the weather by playing a musical instrument.
Sugar wants to learn more about Saga and the human world. She decides to go with Saga to school, but keeps getting Saga into trouble. Salt and Pepper, two other fairies, join up with Sugar and make a lot of ruckus for Saga.
n order to become fully fledged season fairies, Sugar, Salt and Pepper need to each find a "twinkle". The trio sets off to accomplish this task and complete their goals. The only problem is that none of them have any idea what a "twinkle" is, much less where to find one!
The three fairies refuse to give up on their search for "twinkles". A group of pigeons hint that they should try checking the school. There they make a huge mess, but are unable to find anything except for trouble.
The fairy Elder comes to check on his apprentices' progress and to get closer to the pretty rain fairy Ginger. His attempts to get Ginger's attention are hampered as the little fairies bombard him with questions or hints about the "twinkles".
Sugar keeps getting herself into trouble and on Saga's nerves, but this time, things have gone too far. While trying to clean up one of her messes, she ends up damaging one of Saga's most important possessions.
It looks like Sugar and Saga's friendship is over for good. Even though they miss each other, both are too proud to apologize first. In the meantime, Sugar joins up with Basil and Cinnamon, but they are even more wild and irresponsible than Sugar herself.
The inventor, Phil, is met with skepticism and disbelief when he announces that he will create an artificial aurora. Salt, though very vocal in her lack of faith in Phil and his inventions, winds up becoming his assistant.
The fairies are curious about the play and sneak backstage to watch. Of course, wherever these fairies go, trouble is not far behind. They end up getting in the way and almost completely ruining the production.
Even though Sugar hasn't seemed to have found her "twinkle", her magic flower has begun to bud. They take a trip out to the countryside to continue searching, but have a completely different adventure
Pepper lives in a veterinary shop and befriends a turtle named Lancelot. Even though turtles are meant to stay on the ground, Lancelot dreams of flying. Pepper tries to see if she can help him.
The fairies go on a field trip to practice their magic and gain more experience. Sugar hopes to one day be like her mother, visits a town where that season's snow has yet to arrive.
Saga waits for Sugar and the other fairies to return from their trip. A storm has just hit an area where her friends must travel, which greatly worries her.
After the festival, Saga and Sugar help with the cleaning. Sugar's magical flower is about to bloom. Soon, they find that something is missing and must rely upon their memory and retrace their steps to find it.
Saga continues to work to reclaim the piano. Sugar tries to help her. Salt and Pepper come over to tell her that they found their "twinkles". Sugar is happy for them, but frustrated that she hasn't found her own.
Sugar finally learns what her "twinkle" is when the time comes for her to leave. It is a bittersweet moment when Sugar and Saga must say their goodbyes and Sugar is able to make her magic flower bloom.
