The Trix return and the Winx are back at Alfea training. Ms. Faragonda calls the Winx in and tells them about the Lilo, a magical plant which is on the verge of blooming for the first time in centuries, and it is somewhere on Earth, in Gardenia. The Trix are searching for the Lilo as well. The Winx find that the Lilo is in the possession of Macy, Mitzi's younger sister. The Winx try to stop the Trix from gaining the Lilo's great powers.