Bionicle 3: Web of Shadows

Following a long journey to the surface of Mata Nui, the Toa Metru return to their home city for the rest of the sleeping Matoran, only to discover that Metru Nui has been overrun by the spider-like Visorak and their rulers, king Sidorak and queen Roodaka. The Toa soon find themselves caught in the web of the Visorak, their bodies flooded with Hordika venom that mutates them into the beastly Toa Hordika. Tensions rise, and Vakama decides that he can no longer lead his fellow Toa; Roodaka has a more appealing role for him.... The other Toa Hordika soon find themselves under the guidance of the Rahaga, who have come to the decrepit city in search of the legendary guardian Keetongu, whom the Rahaga believe holds the key to the restoration of the Toa Metru and the destruction of the Visorak horde. But Roodaka is ruthless, and Vakama has succumbed to the beast inside himself. And the Toa Hordika are headed right into Roodaka's hands, which seek to break the seal on her true king: Makuta.