The Winx sneak into the eerie CloudTower to challenge the three witches again, hoping to get the ring back. Meantime, the Trix discover that Stella's ring does not hold the legendary power they are looking for. The Winx manage to get the ring back, and while fleeing, they accidentally step into the compound of the famous ‘Crypt of the Magic Archive', the most secret vault of Cloud Tower where complete records of every fairyland and fairy are kept. However, the place is full of never-ending traps and danger… and a mysterious voice speaks to Bloom... 

The witches are getting very annoyed with the Specialists for their constant support to the fairies. Now, more than ever, the witches have a devious plan to break up the friendship between them. During a flying bikes tournament, they cause a horrible accident for Riven and manipulate the situation, putting the blame on Bloom. A furious quarrel bursts out between Riven and Bloom. The Specialists agree with Bloom, and Riven gets upset, deciding to leave the Specialists. The sneaky witches immediately offer their wretched friendship to the boy.