Bionicle Adventures, tome 7 : Web Of The Visorak

The Toa Metru return to the dark and deserted city of Metru Nui. Their mission: save the Matoran still trapped beneath the Coliseum in a deathlike sleep. But is the city truly empty--or does a terrible new danger wait in the shadows? The Toa Metru face their most monstrous enemy, the Visorak, and fall victim to its shocking power.