The girl ponies spend a night at Sweetheart's home. Patch shares a bedtime story about a medieval would-be knight named Squire, who tried to tame the dragon Basil but failed. They hear a noise in the attic, but when they investigate, all they find is Sweetheart's cat, Springfield. Later, as Patch goes to sleep, she sees Squire's ghost, who requests her help in finding Basil.

Bon Bon's youngest baby brother is sick; she feels ignored as her family cares for him. Bon Bon pretends to be sick to garner attention, but in the process, it puts her family in disarray. She confesses that she wasn't really sick, but then the flu spreads to her entire family.

Melody and her band The Rockin' Beats prepare for "The Battle of the Bands" competition. Melody is asked to look after her younger twin sisters Jing-a-Ling and Ting-a-Ling. Unable to find another babysitter, she takes them with her to the competition. She does her best to keep the twins out of trouble but the twins appear on stage. The Rockin' Beats wins the competition.

After having a dream that she won the Ponyland lottery, Clover wakes up and discovers she is the winner of two concert ball tickets. She must choose someone to take, however, in an attempt to please everyone, she invites each of her friends separately. They discover this gaffe, and chase after Clover. Mr. Bloom selects a random name, and picks Melody. Clover remorses about going while the others watch them on TV; she and Melody sell the tickets, and buy pizza so they can join their friends at home.

Melody brings her new cassette player to school, but accidentally leaves it behind in the school yard. After the cassette player goes missing, Melody and her friends strongly suspect Teddy stole it. The following day, a mock trial is held in the school classroom, with Teddy as the defendant and Bright Eyes as the prosecutor. Despite Teddy's wishes, Sweetheart becomes his defense attorney, which makes Melody believe that Sweetheart has betrayed their gang. During the trial, the witnesses and the class cannot provide evidence that Teddy took the cassette player. Sweetheart eventually summons the school's custodian, who reveals that he picked up the cassette player and brought it to the Lost & Found. Sweetheart gets her cassette player back and Melody's attitude changes.

The girl ponies are holding a tea party at an abandoned house. Starlight coaxes her friends to invite boys into their club. After they leave, a family of new ponies arrives and collects furniture from the house. When Starlight and friends return, they find their club items missing, and set traps. The family gets caught in them, but the girl ponies find out they are not thieves but the Barrington family, who have recently moved in. The girl ponies make up for their mistake by helping the Barringtons furnish the house. Later, Mr. Barrington presents a club house to the girl ponies. Starlight invites Logan Barrington for cookies at the next tea party.

As a reward for passing exams, Miss Hackney arranges a costume party for the class, where they dress up as their career aspiration. Bon Bon wants to dress up as a model but thinks she'll be a laughing stock. At the party, when she is about to enter, she hears laughing and runs away to the forest. The ponies were actually laughing at Patch's clown act. Teddy, the only pony to catch sight of Bon Bon, notifies the others and the ponies go after her. They find her and convince her to come back to the party. Bon Bon almost falls off a ledge, but they rescue her and return to the party.

While searching a junkyard for pieces for his artwork, Clover's father finds a white teapot. Clover keeps the teapot, but soon begins to experience bad luck. Suspecting the teapot is the cause, Clover tries to get rid of it, but it somehow returns to her and gets her in further trouble. She eventually returns it to her father, who adds it to his art sculpture.

The class participates in a play by Shakespony. Melody is selected for a leading princess role. She starts to boss around her family and friends. Upset by her attitude, the girl ponies spoil Melody's rehearsal in front of Teddy and Ace. After Starlight snaps at Melody about her current nature, Melody sees how selfish she was, and makes up. Afterwards, the performance runs smoothly.

Melody and Starlight share gossip with their friends, except for Sweetheart, who does not like telling on others. Patch imagines that Teddy has a secret; she tells her friends that Teddy has a teddy bear. Ace overhears this and tells Lancer at football practice. They both poke fun at Teddy until he gives them a punch up and heads home. Teddy, who really owns a teddy bear, is mad at Sweetheart, who worsens his mood. Sweetheart hatches a plan to clear this up. Bright Eyes and Melody bring Ace and Lancer to babysit Sweetheart's baby sisters. When feeding time comes, the girl ponies have Ace and Lancer eat and dress like babies. Sweetheart takes a picture of them, which would ruin their reputation. Ace and Lancer agree to drop the teddy bear story in exchange for the picture. Teddy is relieved that his secret is safe.

Melody, Bright Eyes and Starlight are invited to a date by rock star Chain Link, but it turns out it was a prank phone call from Patch. For her next joke, Patch has Bon Bon do a cooking documentary, but her nervousness causes her to burn a cake. Patch also sabotages Bright Eyes's class project by playing footage of Bon Bon's failed cooking attempt. The girl ponies try to get revenge on Patch but their amateur prank does not work on her. Patch then sees a flying saucer and finds aliens where it lands. When the aliens declare that they want to remove her brain, Patch panics and backs away until she falls into a tub of water. The girl ponies and Teddy emerge and reveal the practical joke.

While teasing Bon Bon about her diary, the girl ponies accidentally break their only tea set. Lacking funds for a new one, they open a lemonade stand. The boys are envious of the girls' business so they plan to open one of their own. Ace worms the recipe out of Bon Bon, and the rivalry between the boys and girls escalates, until Lancer makes amends with the girls.

In order to show Sweetheart his good nature, Teddy invites her to his cousin's farm. Teddy has trouble with the hens and a pig named Yorkie, who tears his teddy bear. To not have to admit that he owns a teddy bear, he pretends that it was a gift for his niece Daisy. Teddy gets mad and scares Yorkie off of the farm. His cousin Corny finds Yorkie, but falls into a river. Teddy, who has never swum in running water before, musters his courage and rescues Corny. At a country fair, Yorkie wins a first prize ribbon and Teddy wins a stuffed pig. He swaps the pig with Daisy for his teddy bear and feels happy.

For the upcoming roller derby, Lancer and Bright Eyes want to be partners, but are too shy to ask each other. Their friends try to help; Ace and Teddy encourage Lancer to act like a bad boy, while the girl ponies suggest that Bright Eyes act like an air-headed glamor girl. Lancer and Bright Eyes end up accidentally insulting each other, and walk off. On the day of the roller derby, the two explain what happened and make up. They then enter the derby together and win first place.

Patch and her friends help out at the orphanage she once lived in. The King and Queen are expected to arrive in search of their long lost daughter, whose description seems to match Patch's, after she notices a birth mark on her hoof. The girls dress Patch up as a princess, but Patch feels very gloomy about leaving her adoptive parents and friends. The King and Queen do not find their daughter, and Patch discovers that the birthmark on her hoof is actually a fleck of paint. When they are about to leave, Clover realizes that an orphan named Rosy is the missing daughter, so the girls brings Rosy to her parents.

Miss Hackney feels dizzy and leaves the teaching to Starlight, who has to explain about the prehistoric cave ponies of Pinto Cave and how a pulley works. The class does not pay attention. Starlight takes them on a field trip to Pinto Cave. They end up stuck in a cavern where settler ponies left behind their tools. To get out of the cave, Ace and Starlight attach a pulley to the cave ceiling and hoist the ponies up. They return to school where Miss Hackney expresses her gratitude by giving Starlight an apple.

A UFO is sighted in the mountains. The police will not allow anyone to get close. Mr. Kiddoo plans to show the class his hot air balloon. Patch and a reluctant Bon Bon sneak on board the balloon and it is launched. They are attacked by birds that tear the balloon and almost fall into shark infested waters. The UFO turns out to be Glow 'n Show ponies, magical flying ponies that glow. One of the flying ponies, Dazzleglow, a pony with a pair of wings and a horn,^{[note 2]} repairs the balloon, and the flying ponies bring Patch and Bon Bon to safety.

Clover's sister, Meadowlark, is going to marry the handsome pony Cheval. Clover and her friends help prepare for the wedding, but Clover makes some blunders in the process. The girls notice that Cheval is flattering another female pony, and suspect him of two-timing Meadowlark. In their attempts to call Cheval out on this, they ruin the wedding cake and flowers. The female pony turns out to be Cheval's sister. Clover manages to find flowers in her family's garden. Bon Bon fixes the wedding cake, and the rings are found in time for the ceremony.

Bright Eyes reads about an endangered green-winged song bird. Bright Eyes, Ace, Bon Bon and Patch explore the forest to find out why the bird is endangered. After braving the forest, they become lost and hungry. They eventually spot the green-winged song bird, and learn that the birds have become endangered because their habitat is being logged. Bon Bon uses the directions she wrote in her diary to return safely to town. Bright Eyes shares her findings, and the mayor declares her Pony of the Month.

Clover's sister, Meadowlark, visits. Clover feels overshadowed by Meadowlark and her talent at ballet. When the Harlequin in the upcoming recital of The Nutcracker is injured, Clover takes her place, but is so overcome with nervousness, that she pretends to have amnesia. Sensing her sister's stage fright, Meadowlark confesses to Clover that she felt the same way at her first performance. On the night of the recital, Clover performs her part brilliantly and receives applause from the crowd and her family.

The girls practice their swimming routine at Lancer's mansion. But their routine is ruined at the event when Teddy pulls a prank on them. The girls demand that Sweetheart un-invite Teddy from her upcoming birthday party or else they won't attend. Sweetheart decides to call the party off. Lancer tricks both Teddy and the girls into boarding his father's yacht, and refuses to let them off until they sign a peace treaty for the sake of Sweetheart. Lancer then brings Sweetheart to his home, where everyone surprises her with the party.

After the girls' picnic is spoiled by rain, Sweetheart finds a frog with an injured leg. She names him Spot and takes him to the vet, who tells her that he will be well in three days. Spot causes trouble at Bon Bon's house and Starlight's ice cream parlor. Sweetheart brings him to school where he causes more chaos. Miss Hackney tells Sweetheart to set Spot free, and the girls tearfully release him into the wild.

After forgetting to study for her math test, Bon Bon decides to cheat. She gets away with it, but is disappointed from her lack of skill. Teddy discovers Bon Bon's diary and finds an entry about the cheating. He tells Bon Bon he will show miss Hackney the entry unless she carries his books to school and joins him at the school dance. After Sweetheart has a talk with Teddy, in which she, in turn, blackmails him, he hands the diary to Miss Hackney and Bon Bon confesses that she cheated. Miss Hackney returns the diary and has Bon Bon retake the test. Bon Bon passes, but Teddy has flunked his test. Bon Bon offers to study with him so they can pass the next test.

Starlight has a crush on Ace, but he does not feel the same about her and ignores her. Starlight joins the soccer team to win his heart. When Ace humiliates her in front of the team, Starlight wants to quit, but Patch convinces her to stay and train for the upcoming soccer match. The day of the match, Starlight scores the winning goal, which makes Ace jealous instead of impressed. But Ace eventually comes around, praises Starlight for the goal and accepts her as a member of the team.

Bright Eyes attends an exchange trip to a tropical island. Her friends are worried about sea monsters, cannibals and natives that might use her as a sacrifice for a volcano. Bright Eyes dismisses those ideas. Once at the island, she stays with the Sunbright family. Bright Eyes becomes worried when the Sunbrights take her on a hike to the volcano. She nearly falls into the crater but is rescued by the Sunbrights. She cheers up and enjoys the rest of the activities.

Bright Eyes tells her friends about a garbage pollution problem at Big Pony River. They split into teams to track down the responsible dumpers, but in the process, they unwittingly add to the litter. Pony River gets clogged and floods. After the grownups unclog the river, the girls see the trash they previously tossed and help the grownups with the clean-up.