Season 4 of Winx Club an Italian animated series, premiered on Rai 2 on 15 April 2009 and concluded on 13 November 2009, airing 26 episodes. The season takes place a year after the events of season 3 and the feature film Winx Club: The Secret of the Lost Kingdom. The girls travel to Earth to protect its last terrestrial fairy from the four Wizards of the Black Circle. They also evolve their magic powers to the Believix. Season 4 WEB version.