Winx Club are back! Now they'll have to reach the Believix level, a new transformation that grant the ability to make someone believe in magic. In addition, Believix also gives 3 additional wings to make the form thêm powerful: Speedix (speed enhancement), Zoomix (teletransportation), and Tracix (travel through time). They will also meet the Wizards of the Black Circle, a group of villains who are after the last fairy on Earth, in order to gain full power. Winx Club will have to find her protect her from the the Wizards, but they have to go unnoticed. In order to live on Earth, they will open a pet cửa hàng named tình yêu & Pet and meet Roxy, a girl who works at the Frutti âm nhạc Bar. Soon they will find out that Roxy is the last fairy on Earth! In the process, Roxy is able to discover her powers, and believing in herself and in Winx Club, will turn into a fairy and will help Winx Club drive away the Wizards and rescue the imprisoned fairies. However, they now have to face the nàng tiên of Earth and their Queen Morgana, who are seeking revenge on humans for not having believed in them: this has made them weaker and they have been imprisoned bởi the Wizards. Winx Club are forced into an uneasy alliance with the Wizards as they now race to save humanity. Will Winx Club prevail?