The Winx Club is on a mission to find the Fantasy Emerald, the first part of the key to close the Legendarium forever. They meet a wise woman who tells them the emerald is hidden in a cave underwater near an island with a lighthouse. The group uses a seaplane to get to the island and then explores the cave, avoiding obstacles and dangers along the way. Meanwhile, the Trix are becoming stronger and are trying to stop the Winx Club from achieving their goal. The Winx Club uses their new powers, known as Mythix, to fight against the Trix. The episode ends with a cliffhanger, as the Winx Club is about to face pirates and zombies on the island, and the Trix are experiencing the magic of the Legendarium for the first time.
Here are the key facts extracted from the text:
1. The Winx Club defeated the Trix on the island of Tiernan.
2. The Winx Club is on a mission to find the Fantasy Emerald.
3. The Fantasy Emerald is the first step to closing the Legendarium forever.
4. The Legendarium is a gateway to the worlds that the Winx Club needs to access.
5. The Winx Club is searching for the Bajo Mundo cave, where the Fantasy Emerald is believed to be hidden.
6. The Bajo Mundo cave is said to be hidden underwater near an island with a lighthouse.
7. The Winx Club meets a wise woman named Vera's kala, who provides them with information about the cave.
8. The Winx Club builds a seaplane to travel to the island and find the cave.
9. The Winx Club discovers that the cave is filled with treasure, but they do not find the Fantasy Emerald there.
10. Selina offers to take the Winx Club to the world of the Legendarium.
11. The Winx Club uses their magic wands to enter the world of the Legendarium.
12. The Trix appears and tries to stop the Winx Club from finding the Fantasy Emerald.
13. The Winx Club uses their new powers to defend themselves against the Trix.
14. The Winx Club is on a mission to find the Emerald of Fantasy and close the Legendarium before the Trix can stop them.