With Tullor safely behind glass at the Sealife Centre, and no news of evil Queen Taran, Lizzy almost believes that her troubles are over. Only she can't help thinking that it's not like Taran to give up. When her sister, Rose, starts behaving strangley, Lizzy wonders whether Taran might be up to her old tricks. Before long it's a race against time as Taran's final, terrifying plot to gain total power unfolds.