Here is the fourth act/sequel to the second season of the series of the book. The PriestessesixXWinx Club is back! Now they will 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 more powerful: Speedix (speed enhancement), Zoomix (teletransportation), and Tracix (time traveling). But trouble occurs for the fourth time when they 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. The PriestessesixXWinx Club will have to find her and protect her from the Wizards, but they have to go unnoticed. But what they don't know is that there isn't only one Earth fairy on Earth but four! Roxy, Leanna, Oribella and Khione are the last Earth Fairies and they're the daughters of the three Major Fairies, Diana, Nebula and Aurora and the Queen of Fairies, Morgana. Now, they must race to protect the four fairies from the wizards. Will The PriestessesixXWinx Club prevail?"