At their meeting, Bright Eyes shows her friends a picture of a Green Wing Songbird. This rare species birds disappeared from Ponyland years ago for reasons unknown and have never returned. Bright Eyes along with Patch, Ace, and Bon Bon set out to learn what caused the disappearance. The map they have is little help since the space showing the Old Woods is blank. Bright Eyes believes this is where the Green Wings might have gone, since so pony has ever been there. With Ace leading them, they soon lose the trail and find the Old Woods. Being lost becomes even worse when they are attacked by bees, Bon Bon sits in nettles and they run out of food. And they can't even bare to kill the fish they catch to eat it. As Bon Bon writes her "farewell entry" in her diary, a Green Wing Song Bird appears. They follow it, and find even more, but many of the trees have also been cut down. By following Bon Bon's diary, they return home and are honored by Ponyland's mayor for their actions. He then has the rest of the Old Woods declared as a Wildlife Preserve.

Clover and her parents meet Meadowlark as she arrives at the train station. She and Cheval are in town to star in a production of the Nutcracker ballet. But Clover is tired of living in her sister's shadow, but doesn't think Meadowlark knows how she feels. The next day, Meadowlark makes a special appearance in Madame Pe`rcher`an's ballet class and hears that all the students including Clover, are going to be understudies in the play. Clover has the part as one of the harlequins, but she hopes that she won't have to perform. But at rehearsal, one of the real harlequins twists her ankle, leaving Clover to take her place. But because she's so clumsy, Clover feels that she really will come off looking like a clown. The next day in school, Clover's mind is too occupied with this and she ignores Ms. Hackney. She sees to be faking amnesia, but her mind is really a blank. But Meadowlark knew that Clover really had stage fright and tries to comfort her. At the play, Clover shows up at the last minute to take her place as the harlequin and is a success.

Patch, Melody, Bright Eyes, and Clover - also known as the Dream Team - are practicing for a synchronized swimming competition. But just as they try for their most difficult formation, the Carrousel, Teddy shows up and scares them with a rubber octopus. After practice, the Ponies are relaxing and Sweetheart is looking forward to her 10th birthday party in the ballroom of Lancer's family's mansion. But Sweetheart's friends lose interest when they find out the Teddy is also invited. The next day, the Dream Team competes, but is disqualified when Teddy frightens them again, this time dressed as a sea monster. The ponies decide that if Sweetheart doesn't uninvite Teddy, no one else would come. Sweetheart cancels the party because she refuses to choose between her friends. That afternoon, Lancer invites Teddy aboard his father's boat, but all the girls are there too. He locks them in and the boat takes off. Lancer proposes a peace treaty and wont turn back until everyone signs. For Sweetheart, they all make up and sign, realizing that it was their selfishness that was hurting her. When they get back, Lancer surprises Sweetheart with a birthday party with all her friends, including Teddy.

While on a picnic, the Little Ponies pack up and leave early when it starts raining. While running back to the tea house, Sweetheart finds a little frog with an injured leg. The ponies take the frog to the veterinarian, and while waiting, Sweetheart names the frog Spot. The vet put a splint on Spot's leg and told them to remove it three days when the fracture heals. After five days, Sweetheart remembers to take off the splint, but Spot still can't jump. The ponies teach him and he catches on. Now that he can jump, he needs a place to stay and Bon Bon is the only one who can take him. But at home, Amber finds Spot, and their mother freaks out. She orders Bon Bon to take him away. Bon Bon takes Spot to the ice cream shop which is a disaster. Finally, Sweetheart takes him home. But in school, Spot disrupts Ms. Hackney's lesson. She suggests that Sweetheart return Spot to the wild. They say good-bye and Spot joins a group of frogs and they go off together. While outside, Melody wants to have a picnic, but of course, it start raining again.

Bon Bon and Clover are cooking and hurrying to clean up their mess before Bon Bon's mother comes home. But it's too late. She sends Bon Bon to her room to study for tomorrow's math test - if she doesn't pass, Bon Bon will have to give up baking. The next day in school, Bon Bon gets her answers from a piece of paper taped to her hoof. But the guilt of cheating eats away at her and she writes about it in her diary. But when her diary falls out of her bag, Teddy picks it up. When Bon Bon discovers it's missing, her friends help her look for it. When she runs into Teddy, he uses it to blackmail her into doing favors for him and being his date to the school dance. In class, he threatens to tell Ms. Hackney what Bon Bon did, especially when she gets a perfect score on the test. After school, Bon Bon is so upset, she calls Sweetheart who guesses that Teddy stole the diary. With that, Sweetheart threatens to tell the world that Teddy has a teddy bear if he didn't give it back. The next day, Bon Bon confesses to Ms. Hackney and she takes the test over. She gets her diary back after Teddy turned it in. Bon Bon explains to Teddy that he didn't have to blackmail her if he wanted to be her friend.

The Little Ponies are just about worn out from their aerobics class and go to the health bar for a cool drink. Just then, Ace walks in, and Starlight's attraction to him is obvious to her friends. But Ace is more interested in getting back to soccer practice and impressing Melody who just arrived, but doesn't like Ace. Starlight figures that one way to attract Ace is to dress up and catch his eye and she dreams of her future with him. At soccer practice, Starlight tries out her new look, but Ace doesn't notice her until she gets splashed with mud, but then he only makes fun of her. She then consults Ms. Hackney, her secret advisor, who tells her develop a common interest with Ace. Starlight goes to try out for the soccer team and makes the team, but Ace is not impressed. Believing this was her last chance for a relationship with Ace, Starlight is heartbroken when Ace only sees her as another player. At the big game, Starlight must take the place of a player who is injured. Ace is less than receptive, especially when Starlight makes the winning kick, causing her to be the star instead of him. Later, at the ice cream shop, Ace comes into apologize for how he acted toward Starlight. He begins telling her that he really was impressed, and soon they are talking about getting together again.

Bright Eyes is looking forward to spending a week on Tropical Island to live with a family as a foreign exchange student. But her friends tell her that she should be leery of a place and people she doesn't know. They try to frighten her with stories of sea monsters, cannibalism, and sacrificial volcanos. But Bright Eyes still decides to go. When Bright Eyes arrives on Tropical Island, she is greeted by Moki, her mother, Mami, and her brother, Ichi, who seem normal enough. They take her on a canoe ride, but Bright Eyes remember's Patch's warning when she thinks she sees a sea monster. But it's only Moki's father, Poppi, a pearl diver. And after they serve her normal food for lunch, Bright Eyes writes to her friends telling them that everything's okay. That is until they all hike up to the volcano, and it starts to erupt. Being too close to the edge, Bright Eyes falls in, Moki's family surprises her by rescuing her. At home, Bright Eyes realizes that she was foolish to believe stories about Tropical Ponies, and the Tropical Ponies admit that they used to believe strange stories about Mainland ponies, and that they really have a lot in common.

Bright Eyes storms into the Ice Cream Shop telling everyone that there's a polluter in Ponyland after finding trash in Big Pony River. She has them divide into groups who stake out each of the river's streams , waiting for the polluter to strike again. Bon Bon and Clover begin searching an ice cream factory truck, but only after Bon Bon throws her ice cream dish in the river. But they find buckets of ice cream, not trash. Patch and Sweetheart check out the printing plant, thinking that their departing barge is full of trash about to be dumped. But only the price tag from Sweetheart's new hat ends up in the river. Starlight and Melody give up when Melody's more interested in her new Cleveland Bay's album. And even when she reads that Chain Link is an environmentalist, she throws her CD wrapper into the river. The next day, everyone wakes up to a flood in Ponyland. The river became blocked with garbage, and last night's storm made it over flow. As Bon Bon's father and other workers try to unblock it, Bon Bon & her friends find some familiar items floating in the water - a CD wrapper, price tags, and a plastic bowl. They realize that everyone in Ponyland is to blame, and they begin a town clean-up.