The Winx are training and preparing for potential battles. Meanwhile, Selina continues to revive mythical creatures, and the team receives an invitation to visit the Golden Auditorium, a magical college. During their visit, they meet the conductor, Salamander, and learn about the history of the college and the spirits of the underworld.
Musa and Tecna team up to figure out how to defeat the spirits and come up with a plan using music as bait. They successfully defeat the spirits by singing a powerful song that echoes through the corridors of the college.
The episode ends with the Winx being thanked for saving the college and prepares for the next episode's celebration in honor of Daphne, the Crown Princess of Domino.
Here are the key facts from the text:
1. The Winx club is returning to Alfea.
2. Selina continues to revive mythical creatures.
3. Flora received her Power Bloomix.
4. The Winx team has a new power.
5. The Golden Auditorium is a magical college of dimensions.
6. The Winx team is invited to visit the Golden Auditorium.
7. The team will be leaving for the Golden Auditorium the next day.
8. The conductor Salamander is a famous violinist.
9. The Golden Auditorium has a system of caves underneath the building.
10. The spirits of the underworld live in the caves.
11. The Winx team uses music to defeat the spirits of the underworld.
12. Muse and Tekna composed a song to defeat the spirits.
13. The song will echo through the corridors of the Golden Auditorium forever.
14. The Winx team is preparing for a celebration in honor of Daphne, the Crown Princess of Domino.
15. Bloom's sister, Daphne, is the Crown Princess of Domino.
16. The movie was voiced by Russian dubbing in 2014.