La batalla por salvar la ciudad de Metru Nui continúa. Para derrotar a los Morbuzakh que desean arrasar la ciudad, los Toa buscan sin descanso los míticos Discos de Poder. Pero esta vez no estarán solos, seis Matoran se ofrecen a ayudarles en su búsqueda, aunque uno de ellos tiene porpios planes.

The Toa are searching for the Disks of Power. Without these disks, they may never be able to defeat the Morbuzakh that is destroying the city of Metru Nui. Six Matoran say they can help find the disks, but at least one of them has his own plans. Will the Toa succed in their quest? Or will someone that they thought they could trust betray them?