LEGO Bionicle is the story of the Bionicle and the island of Mata Nui before the Toa. Before time was ever recorded, the Tohunga, who inhabited Mata Nui, weren't able to live on the island in peace. But a brave Tohunga, they were told, would come one day and restore peace. The Tohungas prophesied that this mighty Tohunga would bring the Toas back by recovering the six Toa stones.