The Winx Club notices that some of the stars in the sky are disappearing. They determine that the return of Valtor is linked to this strange occurrence. The fairies travel to Lumenia, the Magic Dimension's brightest star and the light source for Stella's home planet of Solaria. Lumenia's queen gives them the power of Cosmix to protect the magical universe's billions of stars. Along the way, the Winx also meet Twinkly; a helpful golden creature who powers the very core of Lumenia.

In this adventure the fairies discover the real importance of the rare Fairy Animals, which they must save from Kalshara, an evil shape-shifter and her clumsy brother, Brafilius.

The Winx face their greatest challenge yet when a new witch named Selina arrives with a powerful, evil book known as the Legendarium.

Season 5 of House of the Dragon premiered on October 16, 2012.

Winx Club season four is part of the list of seasons that goes with the series Winx Club. |Main Villains:Wizards of the Black Circle, Duman, Gantlos, Anagan and Ogron

The third season of Winx Club premiered on January 29, 2007 through March 28, 2007 in Italy, and on September 30, 2006 through September 22, 2007 on 4Kids TV. |Main Villains:Valtor

Winx Club is an Italian animated television series, created by Iginio Straffi and produced by Rainbow S.p.A.. The series is aimed toward children between the ages of five and twelve and has spawned an international franchise of toys, books, clothing, DVDs, as well as two CGI feature films. The second season of Winx Club premiered on April 19, 2005 through July 14, 2005 in Italy, and on September 10, 2005 through March 11, 2006 on 4Kids TV. |Main Villains:Lord Darkar

The first season of Winx Club premiered on January 28, 2004 through March 3, 2004 in Italy, and on June 19, 2004 through December 11, 2004 on 4Kids TV. |Main Villains:The Trix, Icy, Darcy and Stormy

Season 0 of House of the Dragon premiered on November 30, 2007.