The Plan

"The Plan" was a term used by members of the Brotherhood of Makuta when referring to Teridax's ultimate goal of overthrowing the Great Spirit. Not all Makuta were very enthusiastic about the Plan or it's chances of success, but they went along with it because they knew Teridax would kill them if they didn't.

Details
Not much is known about the full extent of the Plan. Zaktan was the only one outside of the Brotherhood known to be aware of exactly what the Plan involved.

Teridax first began to think that it might be possible to overthrow Mata Nui after the League of Six Kingdoms was defeated. Several centuries prior to the Great Cataclysm, he somehow attacked Mata Nui and injured him enough that he began to fall unconscious. Just before Mata Nui fell asleep, Makuta placed the Matoran of Metru Nui into spheres that rendered them unconscious and caused them to lose their memories. His goal was to later awaken them and pretend to be their savior, after which they would hail him as their Great Spirit. But his plan was foiled by the Toa Metru, who rescued the Matoran and brought them to the island of Mata Nui.

Makuta then began harassing them with rahi attacks, trying to keep them away from Metru Nui. But eventually, Makuta was defeated and the Matoran returned to their original home. Despite this, the Brotherhood's plan seems to still be in effect, and is entering its final stages. What these last stages are remains a mystery, however, Makuta seems to be counting on the fact that the Toa Nuva will successfully complete their destiny and awaken Mata Nui.

Teridax once compared his plan to the tactics of a Rahi called a Water Wraith. "Sometimes," he told his fellow Makuta, "the best way, the only way to win... is by losing."