Ep 24. The Golden Butterfly

As outside of Alfea the fight between the Trix and the Alfea's fairies goes on, the Winx use their Stones of Memories to go back to Alfea in the past. The Winx meet Mavilla and young Faragonda, asking them to help them find the Golden Butterfly, the only animal that can give light and energy again to the Heart of Alfea.