Finding she has some free time one morning, Strawberry visits Berrykin Bloom who is filled with excitement over his new crop of Berry Bitty fruits and vegetables his garden has never grown so much produce! He can't wait to share his new crop (the perfect bitty size) with Berry Bitty City, so Strawberry volunteers to help him transport the produce to Orange's General Store.
After returning to the café after a walk with her pets, Strawberry is met by Mr. Longface. He's been waiting for her so that they can get started making treats and decorating for Sadiebug's and Kadiebug's party that afternoon. But Custard and Pupcake have enjoyed their time outside so much that they want to continue playing.
With all the Baby Berrykins running around Berry Bitty City, Princess Berrykin decides to build a Day Care Center and playground. But she's worried because it's dull-looking - all grey metal and brown wood. She asks Strawberry whom might be good to help her out. And two names immediately come to her mind - Lemon and Raspberry! The Princess confesses she's always admired their sense of design and style.
Lemon is ecstatic. She races out of her salon and goes around to the other girls' houses proclaiming that she "did it!" and beckoning them to join her. They follow her back and are completely dazzled by her newest creation - Glamicures. They are brightly colored, jeweled manicures with tiny microchips inside that play songs when the wearer moves her hand. Each girl lines up to receive her new glamicure and soon there is a cacophony of color and sound.
While sipping cider in Strawberry's café, the girls muse about how they cannot wait for winter to arrive. They list the various traditions they love about the season but the one they all agree on is the Glimmerberry Ball. Strawberry mentions that she doesn't think the café can hold the party this year because of how the town has grown. The girls decide to split up and search for a new location.
Raspberry is distraught when she suspects her friends have copied her design on her lantern for the "Glimmerberry Gathering".
The grove around Berry Bitty City is abuzz with activity. The Berrykins are using their sparkles to harvest berries, Berrykin Bloom is in his garden spraying flowers with a special solution to make them larger, and Raspberry is nearby gathering flower petals to make perfume. The wind starts to blow and picks up some of the sparkles. The sparkles float along the wind and get combined with some of Berrykin Bloom's solution.
While in the midst of a cake decorating demonstration at the café, the girls are uncharacteristically interrupted by an excited Princess Berrykin. She announces the Berrykins have decided to revive the old tradition of the Berry Bitty Buggy Derby. While the girls enthusiastically recount the stories they've heard about it and ask the Princess questions, Blueberry, carrying enough books to block her view, comes through the door and unknowingly interrupts the Princess.
Blueberry has become obsessed with the mystery book detective heroine, Patti Persimmon. She decorates her store with Patti posters and rearranges her shelves to make room for all the Patti books she's ordered. Blueberry begins to neglect outings with her friends and even goes so far as to dress like her idol just to emulate her. She then starts looking for cases to solve around town.
Overhearing Blueberry reading a story to the baby Berrykins about the scary Galumphalot, Orange is uncharacteristically shaken. She determines she doesn't want anything scary around her, just relaxation. But while the girls are having a hair-styling party at Lemon's salon, a malfunction at the BerryWorks causes the whole town to go dark. And Orange begins to get really anxious.
Strawberry opens her front door to a throng of Berrykins all cheering for the new BerryFest Princess. She is appreciative of their admiration but unsure of exactly what her duties entail. In response the Berrykins bombard her with her duties - major to miniscule. One Berrykin sums it up by telling her she's responsible for presiding over all the activities of the BerryFest to make it the best.
All of Berry Bitty City is gathered around to watch the last snowberrykin melt. As the last bit of snow forms a puddle, a cheer goes up, spring is here! It's now time for the annual BerryFest. But with Princess Berrykin out of town on business, who will be the BerryFest Princess and preside over the festival?! Everyone is abuzz with how to go about choosing the Princess and what her duties will be. Postmaster Bee declares the only fair way to go about it is to hold an election. Everyone agrees.
When Apple feels left out of a Berryball game and an advanced ballet class, she invents some "groove booties" programmed to dance to any beat. She temporarily impresses her friends with her dance moves, but when the groove booties go out of control and threaten the town's Berryball game, she is forced to fess up.
Berrykin Bloom's braggart cousin, Berrykin Bertram, has won the hot sauce competition at the local county fair year after year.
Sour teasing Apple escalates into a "prank war" between the two of them. After the girls' feud disrupts the town, they are sentenced in a Berry Bitty City-style trial to camp alone together for a whole weekend. Miraculously, they emerge best buds, and their friends are relieved, until Sour's influence on Apple turns her into a mini-Sour, and they have to do a personality "makeover" on Apple.
Apple's rave review on her berryweb page of Strawberry's new dessert starts a booming mail order dessert business for Berry Bitty City. When Strawberry's stuffed-up nose makes her bake a bad-tasting cake, Apple, afraid the truth will hurt Strawberry's reputation, proclaims it's delicious. The fib snowballs when the Queen of Berryvania reads Apple's review and orders Strawberry's new cake for her ball.
When a comedy of errors causes Orange, Plum and Cherry to arrive late to their campout, they start off their annual tradition of telling tall-tales around the campfire.
When Sour wishes she could have a birthday all her very own, her twin sister Sweet grants her wish by forgoing celebrating her birthday. But what begins as a day that Sour has always dreamed of quickly becomes a disappointment when she misses her twin. With Strawberry's help, Sour gives her birthday back to Sweet with a special surprise.
Lemon and Raspberry's fashion podcast is saved by Apple, then almost sabotaged by Sweet and Sour when Lemon's "mood hair" runs amok, acting like the bickering twins, and the twins' comical argument is accidentally broadcast on the "berrynet."
Lemon and Raspberry hire twins Sweet & Sour to help out in Strawberry's café, so Strawberry will have time to appear in an internet fashion contest.