The island of Mata Nui must face one final threat from the evil Makuta: The Rahkshi. The only hope for the survival of the islanders rests with two Matoran villagers, who must find the seventh Toa and deliver him the Mask of Light.
Six ordinary Matoran are chosen to become Toa, guardians of the legendary city of Metru Nui. But as they accustom to their new role, conflicts quickly arise between them, and a sinister plot is set in motion right under their noses.
The Toa Metru return to Metru Nui to rescue the remaining sleeping Matoran, only to find it overrun by the spider-like Visorak horde and its ruthless, sadistic rulers, Sidorak and Roodaka.
The spirit of Mata Nui leaves to a faraway wasteland, when he and his people are conquered. There he helps unite 2 villages. They ask him to help defend the villages against the real enemy, the Skrall and Bone Hunters.