Sadie finds a magician's hat and meets its tenant, Gilbert, a magical bunny and assistant to the most famous wizards throughout history.
Sadie and Gilbert are chosen to star in Harmony High's 21st century time capsule video, much to Val's dissatisfaction. However, Sadie wakes up on the day of filming with a giant wart on her nose, and her magical attempts to remove it results in her nose and Gilbert's whiskers disappearing. The two venture to the Labyrinth of the Lost and Doomed to retrieve their missing facial features, while Teepee and Lulu prevent Val and her pet dog Prince from starring in the video instead.
Sadie's practicing of the acceleration spell backfire when the spell is accidentally cast on Teepee, landing him a spot on the school's track team despite his lack of athletic fitness. Sadie decides to give Teepee a confidence potion disguised as perfume to help his self esteem, but merely ends up inflating his ego.
The Wardens of Magic task Sadie and Blaine with creating the best rainbow-summoning spell individually. Blaine's mentor, Cornelius, decides to help Sadie, despite Gilbert's cautiousness.
Desperate to avoid having to complete a magic essay and cleaning her room, Sadie creates two clones of herself to do her chores so she can go to Sam's barbecue party. When the clones end up going to the party themselves, she, Gilbert, Teepee and Lulu must try and make them disappear.
Sadie starts to have the worst of luck when Val begins to have the best of luck. Upon learning that Val has started wearing a secretly magical bracelet that makes gives her good luck at the price of all of Harmony suffering endless bad luck, Sadie attempts to retrieve the bracelet.
Sadie and friends cause magical mischief when bringing the pharaoh Ank from the past to the present for their ancient Egypt project.
Furious that Val has asked Sam to the school dance before her, Sadie brings a Lance Lightning action figure to life as her date to make Val jealous.
A love potion Sadie initially intended to give to Sam ends up in all of school's tacos, causing everyone to fall in love with her.
Sadie and Gilbert try to find the mystical and rare See-Me-Not Flower before Principal Covert.
Sadie and Blaine must team up to rescue Gilbert and Cornelius from Covert's clutches.
After Sadie and Gilbert bicker over a catchy pop song, an accidentally produced music potion ends up in Harmony High's drainage and water supply, turning everyone into dancing zombies.
Sadie and Teepee meddle with time to visit a long-awaited concert sooner, despite Lulu's desires for them to work on a class project together.
Val and Prince, and Blaine and Cornelius, become ruthless in dethroning Gilbert as the school's mascot, so he and Sadie compete against them in a mascot competition. It isn't long before Sadie and Blaine cheat with their magical abilities.
Sadie and Teepee ensue hilarious mayhem with a magic glove that allows them to travel to difference place through doorways, only to send Coach Proctor's job into jeopardy. Meanwhile, Lulu tries to help Gilbert become calm.
When Sadie's class get lost in the woods late at night after a field trip gone wrong, she and Gilbert are forced to venture into Harmony's caves to prevent Val, Sam and Doug from accidentally stumbling into the Magical Realm. Gilbert meets the cowardly dragon Egbert, and Sadie starts to see a softer side to Val.
Sadie forces Gilbert to spend a day with Lollipop, Mr Stormweather's daughter's pet rabbit, while she sneaks of to the movies. Gilbert is unable to study for a meeting with the Wardens as Lollipop makes his time a nightmare, and Max enforces blackmailing techniques on Sadie.
Sadie and Gilbert begin to become sick of each other's company, so the Wardens send the mysterious cat Purrpetua to replace Gilbert as Sadie's mentor.
Sadie causes panic at her school when nurturing a baby monster from the Magical Realm, whom she names Gah.
Teepee pretends to be a superhero to prevent everyone at school from figuring out that Sadie's a wizard, and continues this facade with an irritated Sadie's aid.
The Wardens force Sadie and Blaine to temporarily switch Gilbert and Cornelius as mentors after expressing their unappreciation for them. This leads to Blaine spitefully casting a spell on Gilbert that makes him smell everywhere he goes.
Warden Vincent's sauna falls into the human world through one of the many rifts between it and the Magical Realm, intriguing Sadie to turn Teepee into an alien monster as a cover-up, which dangerously attracts the attention of Covert.
Max, realizing that none of his inventions work, decides to start a hot chocolate business instead. But due to the hot chocolates' unbearable tastes, Sadie restlessly casts spells on them to make them taste outstanding.
Sadie's organization app mascot, Toady, goes rogue after she casts a spell on her to help her plan a party.
Dark magic is afoot in Harmony High when a mysterious being begins turning people completely still.
Blaine's cousin Zaine comes to visit, and Sadie immediately becomes suspicious of his evil intentions and the bad influence he's having on Blaine.
To make her mother forget a massive mess she made in kitchen after a potion-producing malfunction, Sadie casts a forgetful spell on Selina, who ends up forgetting who Sadie is completely.
Gilbert, crestfallen that nobody takes him seriously as the school mascot and simply think of him as good luck charm, disappears into the Magical Realm, causing the school basketball team to loose their focus.
When Val, Coach, Nolan, Tammy and Trixie humiliate Teepee for failing 'gymathon', a mysterious avenger begins to cause mischief around them.
Sadie casts the cheeky monkey spell on Selina to bring back her sense of fun for her job, only to make her behave like an uncontrollable monkey raging throughout Harmony.
On the day of Bernie the Bear's awakening, Sadie and friends become immensely irritated when babysitting Sam's deafening baby brother Luke, and Sadie accidentally casts a sleeping spell on all of Harmony.
Sadie steals Grimaldo's Book of Advanced Magic from Gilbert's library so she and Blaine can learn more advanced spells, only for the book to come to life and give them pain for comedic amusement.
When Teepee loses his grandfather's watch, Sadie gives him another one from the Labyrinth of the Lost and Doomed, which has the power to freeze time. Trouble arises when the Guardian of the Labyrinth will stop at nothing to get it back.
Blaine curses Sadie to act like an incredibly unpleasant diva on the day of the school talent show. Gilbert, Lulu and Teepee must prevent Sadie from going on a world tour with the Whatevs all while keeping her calm.
World-renowned dancer Anna Catlova visits Sadie's school to help the students with their individual dance choreographies, but unfortunately, Lulu can't dance. Gilbert and Sadie use magic to convert the dancing talent from one of Anna's shoelaces into Lulu's shoes, only to start suspecting that Anna could be a master thief.
Desperate to star in a music video with Val, Tammy and Trixie to meet the Whatevs, Sadie casts a 'best friends forever' spell on Val. Val becomes overly possessive and obsessed with Sadie, damaging her friendship with Lulu and soon endangers Gilbert.
The Guardian of the Labyrinth, growing tired of his endless job, is invited by Sadie to take a day-off in the human realm. Disguised as Sadie's 'cousin' Cyril, he begins causing an unpleasant time at Juicy Jake's.
Both Sadie and Gilbert mistakenly set loose a small magical flea, who starts turning anyone in Harmony's dreams into a reality.
Lulu becomes increasingly depressed over failing a science exam, so Sadie casts a spell on her to make her feel 'light at heart', only for gravitational problems to arise around her.
To help Selina gain an interview with the actor Sloane Walker, Sadie brings the character he plays in Gilbert's favorite TV show, "Best Frenemies", Jerry, to life.
When Sadie and friends set loose evil cupcakes in Harmony High, they decide to fight sweetness with sweetness.
Sadie casts a spell through the TV to force to her news-reporting mother to reveal where they're going on vacation. However, everyone who was watching TV when the spell was cast begins to tell the truth, and only the truth.
The students and faculty of Harmony High compete against each other in a scavenger hunt to find the Golden Smoothie.
Upon learning that the recent horrendous weather in Harmony could force Sam and Jake to close their smoothie business and leave town, Sadie uses magic to bring only hot weather that soon enough becomes insufferable.
Gilbert causes Sadie to catch a cold due to a magical mishap, putting Sadie's student president campaign at risk. Gilbert, disguised as Sadie, goes in her place, and starts acting unsympathetic, determined to win at any cost.
When Sadie mixes up a spell with one of her poems, she causes her entire class to disappear into thin air. She, Lulu and Gilbert must retrieve the spell from Covert and bring the class back.
When the Wardens task Sadie and Blaine with creating a spell that has never been cast before, a mischievous Blaine casts an immaturity spell on Gilbert to slow down his and Sadie's progress.
A despaired Sadie believes Sam has started dating Val after ignoring him so much on their first date. She and Gilbert use the Time Turner to repeat the day again and again to make the perfect date happen.
Sadie casts a leadership spell on the shy Melvin to help him guide Harmony High into an environmentally friendly future.
Max finds the rare Magnafloritestone on the beach, and starts gaining immense amounts of knowledge at the price of everyone around him losing their intelligence. When Sadie gets the blame, she has to clear her name.
Gilbert berates Sadie after getting injured in a wizard training session, causing Sadie to fear using and lose her magical abilities.
