"In the time before time, the Great Spirit Mata Nui descended from the heavens, bringing to use the virtues of Unity, Duty, and Destiny. But our happiness was not to last. His dark brother, the Makuta, followed Mata Nui to make war against us all. They battled, and after a tremendous struggle, the Makuta was vanquished, once and for all. With his final strength, the Great Spirit reunited our shattered planet, and created this paradise. But the Makuta was not all that threatened our peace. Dark forces of all manner lurk in the shadows around us, ready to strike. And strike us...they will." Boom. No need to read up on complicated backstory unless you want to, and at the same time, we throw nothing other than some of the serials out the window. A continuation can work, and it can be good.