Winx Club: 4x21
Sibylla's Cave (a.k.a. The Fairy of Justice)
The Winx form an unlikely alliance with the Fairy Hunters to help one of them after Duman comes down with an illness. They travel to the Sibillini Mountains in Italy, where they ask the Fairy of Justice, Sibylla, for help.
4 - 1The Wizards of the Black Circle Apr. 15, 2009
4 - 2The Tree of Life (a.k.a. Fear in Pixie Village) Apr. 17, 2009
4 - 3Winx on Earth Apr. 20, 2009
4 - 4Love & Pet (a.k.a. Magic Pets) Apr. 22, 2009
4 - 5Mitzi's Present (a.k.a. Ogron's Spell) Apr. 24, 2009
4 - 6A Fairy in Danger (a.k.a. A Fairy Found) Apr. 27, 2009
4 - 7Winx Believix (a.k.a. I Believe in You) Apr. 29, 2009
4 - 8Hidden in the Country May. 01, 2009
4 - 9Nebula (a.k.a. Nebula's White Circle) May. 04, 2009
4 - 10Musa's Song (a.k.a. The Audition) May. 06, 2009
4 - 11Superheroes May. 08, 2009
4 - 12Dad! I'm a Fairy (a.k.a. The Pet's Pursuit) May. 11, 2009
4 - 13The Wizard's Attack (a.k.a. Roxy's Energy) May. 13, 2009
4 - 14The Perfect Number (a.k.a. Bringing Magic Back) Oct. 14, 2009
4 - 15Magic Lessons (a.k.a. The New Witch in Town) Oct. 16, 2009
4 - 16A Virtual World (a.k.a. A Virtual Hideout) Oct. 19, 2009
4 - 17The Enchanted Island (a.k.a. Island Tricks) Oct. 21, 2009
4 - 18The Nature Rage (a.k.a. Diana's Attack) Oct. 26, 2009
4 - 19In Diana's Kingdom (a.k.a. In the Amazon Forest) Oct. 28, 2009
4 - 20The Gifts of Destiny (a.k.a. Diana’s Redemption) Oct. 30, 2009
4 - 21Sibylla's Cave (a.k.a. The Fairy of Justice) Nov. 02, 2009
4 - 22The Frozen Tower (a.k.a. Aurora's Tower) Nov. 04, 2009
4 - 23Bloom's Trial (a.k.a. Bloom's Challenge) Nov. 06, 2009
4 - 24The Day of Justice (a.k.a. The Wizard's Trap) Nov. 09, 2009
4 - 25Morgana's Secret (a.k.a. Home at Last) Nov. 11, 2009
4 - 26Ice and Fire (a.k.a. Duel in the Omega Dimension) Nov. 13, 2009