The winx creator said and post the officla season opeing .A least the audio song oppeing .just the song. listen the song it officla the song siamo winx.sorry because it italian.
We can see the name of the first episode form season 5. The Spill.and the summry:In the kingdom of Andros, Aisha's Uncle Neptune plans to make his son Nereus a prince; Nereus' twin brother disrupts the crowning ceremony and is sent to prison.