The Toa Hordika must fight to resist the effects of the Visorak poison that's slowly destroying and mutating them. But they cannot ignore external enemies--who inlcude one of their own number--who seek to destroy them and rule Metru Nui forever. Based on the 3rd Bionicle movie this is the ultimate showdown between the Toa Hordika and the Visorak hordes.

שם הספר
Tales of the Masks (Bionicle Chronicles, Book 4)
Mystery of Metru Nui (Bionicle Adventures #1)
Trial by Fire (Bionicle Adventures #2)
Bionicle Encyclopedia 1st Edition