On Prometia, the Winx fall into the trap set by Orion and Valtor. Meanwhile, on Iridia, Obscurum turns all the Lumens into Staryummies. Will the Winx arrive in time to save Orion?

the Winx get out of the Starcase, ready to face a new mission: they have to find the seven Prime Stars into which the Wishing Star divided, before Valtor and the Trix do it ...