Winx Club (2004)
S05E04 The Sirenix Book
Episode Overview
Krystal works to restore Sky's memories, but the pain of losing the Eraklyon pendant is creating a barrier, and only Sky knows its whereabouts. Meanwhile, Timmy assists Tecna in upgrading her phone to locate the Sirenix Book, but the Trix secretly interfere with their efforts. As the Winx search for the real Sirenix Book, they stumble upon a counterfeit that transforms Tecna into a menacing robot, programmed to hunt down the Sirenix Book.