After having a picnic on a dirty beach the Winx decide to clean it up, while Stella tries her hand at a fashion show. Meanwhile Tritannusgains more power, but looses his toxic one.

After being queen for a day, Stella has to show everyone she's hurt that she's sorry, and her friends help her throw a party to do just that.

Continuing their quest to find all the mystical gems, Bloom, Aisha and Tecna go to Tecna's home world, Zenith, to find the second gem of empathy. Meanwhile, Musa, Flora and Brandon watch over Stella who has accidentally turned into a little kid! Will the Winx find the second gem, and turn Stella back to normal?

With the Legendarium Key forged and in their hands, the Winx head to Cloud Tower to lock the Legendarium, but Selina is determined to stop them.

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During a day of races that are taking place at Alfea with current, & past students of Red Fountain, the Trix attack and create lions out of dark magic to fight the Winx for them.

The Winx change their concert, into a benefit to help clean up the oil spill. Meanwhile Tritannus escapes from jail with the help of the Trinx and begins absorbing the oil spill's pollution and slowly begins transforms into a monster.

Krystal attempts to heal Sky's memory, but the memory of losing the pendant of Eraklyon is causing the blockage, but only Sky knows where it can be found. Timmy helps Tecna update her phone to find the Sirenix Book, which the Trix secretly sabotage. While, searching for the Sirenix Book, the Winx find the fake one, which turns Tecna into a terrifying robot, whose mission is to find the Sirenix Book.

The girls all head back to Alfea to talk more with Ms. F and read up o a book called The Sirenix. While in the library they are attacked by both the Trinx and Tritannus: who is getting stronger. Sky takes a hard blow to the head.

The Trix summon the Beast of the Depths and unleash it on Daphne's welcome home party, and the Winx are powerless against it.

The Winx Club as well as Brandon, Timmy and Sky continue their dangerous journey to the Ice Caves to find the Mirror of Truth and turn Stella back to her usual self. Then, the Alfea school year starts and the girls are reunited with Layla who tells them of the horrible news from Tides. Also, Ms. Farragonda tells the third years about earning their Enchantix!

The Trix show their powers, wondering if they are strong enough to go up against The Winx Club. As the Trix get stronger, so do the Winx.

When Bloom decides to go back to Earth, Layla, Musa, and Stella decide to join her. When some gangsters catch Musa using magic, it's up to the Pixies to save them!

While The Winx leave for a getway resort, Avalon shows his true loyalties and tricks a pixie into going back to Pixie village. Icy follows to retrieve the codex.

While the Winx Club are away on a mission, their Pixies defend their village from Icy, Stormy, and Darcy winning in the end.

Sky, Bloom, Brandon, Flora, Lockette, and Zing attempt save Princess Diaspro from a a band of goodie goodies known as the Wrong Righters who attempt teach Diaspro a lesson in kindness and helping others.

The Winx Club must find a way to turn Stella from a beast back to her beautiful self.

Valtor challenges the three headmasters of the schools to a duel. The Winx Club determines the duel a diversion to occupy the headmasters while the real Valtor breaks into Alfea.

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Bloom's plans to head home for Christmas are interupted by the Trix. They have trapped the girls at their old school with Ice dragons to keep them at bay.

The girls are on a field trip to practice the skills to ""listen to nature."" In the meanwhile, Nutt tells the witches that a few specialists are escorting the troll to Magix. Fearing that a mind sorceror might get a hold of the troll and discover their plan, they break the troll out. The specialists and fairies team up to find the troll, but the witches beat them to it and make the troll disappear forever. With no sign of the troll, the specialists head back to Red Fountain and the girls return to their class.

Bloom is angry for loosing two pieces of the Codex to the witches and turns to Avalon for advice. While undergoing regression therapy with professor Avalon a mysterious dark energy takes hold of Bloom. While her friends worry about her well being, Bloom ultimately makes her way to the secret room to steal Alfea's part of the Codex.

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In the kingdom of Andros, Aisha's uncle Neptune plans to make his son Nereus a prince, Nereus's twin brother disrupts the crowning ceremony and is sent to prison.

Bloom first discovers her Winx powers by attacking Mr. Knut; Mr. Knut tries to steal Stella's and Bloom's powers; the Winx and warriors defeat Mr. Knut; Stella takes Bloom to Alfea.