Faragonda, the Headmistress of Alfea, punishes the fairies for their unauthorized trip to CloudTower. She confines them to clean the entire school- To avoid the fairies using magic for the cleaning, Faragonda temporarily deprives them of their powers. The Specialist come by to help them. But the Trix arrive in Alfea with a monster summoned to destroy the college! Although without magical powers, the Winx get help from the Specialists and defeat the monster, spoiling the witches' plan. As a reward, Faragonda restores their magic powers. 

The mysterious voice that saved Bloom at CloudTower keeps coming up in her dreams. It is Daphne, one of the nine legendary nymphs of Magix. Meanwhile, Musa quarrels with Stella and leaves the dormitory for downtown. Unfortunately, she runs into the Trix, who immediately attack her. But before their fatal strike, the Winx arrive in time to rescue Musa. Icy realises Bloom's huge source of energy. She recognizes that such energy is very similar to the legendary dragon fire power... How does Bloom have such power?