Bionicle 3: Web of Shadows is a 2005 direct-to-video science fantasy action film based on the Bionicle toy line by Lego and the third installment in the Bionicle film series. It is largely a sequel to Bionicle 2: Legends of Metru Nui, with the majority of events taking place before that film's ending. Like Legends of Metru Nui, Web of Shadows is a prequel to the first film, Bionicle: Mask of Light. This is the first Bionicle film to not be given a rating by the MPAA. It was released on DVD on October 11, 2005.
In the film, the Toa Metru return to their island city home of Metru Nui to rescue the Matoran populace whom they are sworn to protect; the Matoran all remain in a deep coma following the events of the previous film. Upon arrival, the Toa discover that the city has been overrun by spider-like creatures called Visorak, who capture the Toa and mutate them into beast-like creatures known as Hordika. The Toa Hordika work with a group of beings called Rahaga to find a way to revert to their original forms while remaining committed to their primary objective of rescuing the Matoran.